2005-04-17 06:20:36 +08:00
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#
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# IPv6 configuration
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2005-07-12 12:13:56 +08:00
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#
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# IPv6 as module will cause a CRASH if you try to unload it
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2008-04-14 14:30:47 +08:00
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menuconfig IPV6
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2005-07-12 12:13:56 +08:00
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tristate "The IPv6 protocol"
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2015-07-13 23:48:00 +08:00
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default y
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2005-07-12 12:13:56 +08:00
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---help---
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2015-07-13 23:48:00 +08:00
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Support for IP version 6 (IPv6).
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2005-07-12 12:13:56 +08:00
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For general information about IPv6, see
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2013-02-22 08:43:05 +08:00
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<https://en.wikipedia.org/wiki/IPv6>.
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2015-07-13 23:48:00 +08:00
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For specific information about IPv6 under Linux, see
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Documentation/networking/ipv6.txt and read the HOWTO at
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<http://www.tldp.org/HOWTO/Linux+IPv6-HOWTO/>
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2005-07-12 12:13:56 +08:00
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To compile this protocol support as a module, choose M here: the
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module will be called ipv6.
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2008-04-14 14:30:47 +08:00
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if IPV6
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2006-03-21 09:04:53 +08:00
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config IPV6_ROUTER_PREF
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bool "IPv6: Router Preference (RFC 4191) support"
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---help---
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Router Preference is an optional extension to the Router
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2009-01-26 18:12:25 +08:00
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Advertisement message which improves the ability of hosts
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to pick an appropriate router, especially when the hosts
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are placed in a multi-homed network.
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2006-03-21 09:04:53 +08:00
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If unsure, say N.
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2006-03-21 09:06:24 +08:00
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config IPV6_ROUTE_INFO
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2012-10-03 02:19:49 +08:00
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bool "IPv6: Route Information (RFC 4191) support"
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depends on IPV6_ROUTER_PREF
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2006-03-21 09:06:24 +08:00
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---help---
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This is experimental support of Route Information.
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If unsure, say N.
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2007-04-26 08:08:10 +08:00
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config IPV6_OPTIMISTIC_DAD
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2012-10-03 02:19:49 +08:00
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bool "IPv6: Enable RFC 4429 Optimistic DAD"
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2007-04-26 08:08:10 +08:00
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---help---
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This is experimental support for optimistic Duplicate
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Address Detection. It allows for autoconfigured addresses
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to be used more quickly.
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If unsure, say N.
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2005-04-17 06:20:36 +08:00
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config INET6_AH
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tristate "IPv6: AH transformation"
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2012-05-15 09:57:44 +08:00
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select XFRM_ALGO
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2005-04-17 06:20:36 +08:00
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select CRYPTO
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select CRYPTO_HMAC
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select CRYPTO_MD5
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select CRYPTO_SHA1
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---help---
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Support for IPsec AH.
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If unsure, say Y.
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config INET6_ESP
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tristate "IPv6: ESP transformation"
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2012-05-15 09:57:44 +08:00
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select XFRM_ALGO
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2005-04-17 06:20:36 +08:00
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select CRYPTO
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2008-03-05 06:29:21 +08:00
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select CRYPTO_AUTHENC
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2005-04-17 06:20:36 +08:00
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select CRYPTO_HMAC
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select CRYPTO_MD5
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2006-07-30 13:41:01 +08:00
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select CRYPTO_CBC
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2005-04-17 06:20:36 +08:00
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select CRYPTO_SHA1
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select CRYPTO_DES
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2016-01-25 19:58:44 +08:00
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select CRYPTO_ECHAINIV
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2005-04-17 06:20:36 +08:00
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---help---
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Support for IPsec ESP.
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If unsure, say Y.
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2017-02-15 16:40:00 +08:00
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config INET6_ESP_OFFLOAD
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tristate "IPv6: ESP transformation offload"
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depends on INET6_ESP
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select XFRM_OFFLOAD
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default n
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---help---
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Support for ESP transformation offload. This makes sense
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only if this system really does IPsec and want to do it
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with high throughput. A typical desktop system does not
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need it, even if it does IPsec.
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If unsure, say N.
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2005-04-17 06:20:36 +08:00
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config INET6_IPCOMP
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tristate "IPv6: IPComp transformation"
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2006-03-28 17:12:13 +08:00
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select INET6_XFRM_TUNNEL
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2008-07-25 17:54:40 +08:00
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select XFRM_IPCOMP
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2005-04-17 06:20:36 +08:00
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---help---
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Support for IP Payload Compression Protocol (IPComp) (RFC3173),
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typically needed for IPsec.
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If unsure, say Y.
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2006-08-24 10:13:46 +08:00
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config IPV6_MIP6
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2012-10-03 02:19:49 +08:00
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tristate "IPv6: Mobility"
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2006-08-24 10:13:46 +08:00
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select XFRM
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---help---
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Support for IPv6 Mobility described in RFC 3775.
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If unsure, say N.
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2015-08-18 04:42:27 +08:00
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config IPV6_ILA
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tristate "IPv6: Identifier Locator Addressing (ILA)"
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2015-12-18 22:37:37 +08:00
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depends on NETFILTER
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2015-08-18 04:42:27 +08:00
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select LWTUNNEL
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---help---
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Support for IPv6 Identifier Locator Addressing (ILA).
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ILA is a mechanism to do network virtualization without
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encapsulation. The basic concept of ILA is that we split an
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IPv6 address into a 64 bit locator and 64 bit identifier. The
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identifier is the identity of an entity in communication
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("who") and the locator expresses the location of the
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entity ("where").
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ILA can be configured using the "encap ila" option with
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"ip -6 route" command. ILA is described in
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https://tools.ietf.org/html/draft-herbert-nvo3-ila-00.
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If unsure, say N.
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2006-03-28 17:12:13 +08:00
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config INET6_XFRM_TUNNEL
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tristate
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select INET6_TUNNEL
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default n
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2005-04-17 06:20:36 +08:00
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config INET6_TUNNEL
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2006-03-28 17:12:13 +08:00
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tristate
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default n
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2005-04-17 06:20:36 +08:00
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2006-05-28 14:05:54 +08:00
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config INET6_XFRM_MODE_TRANSPORT
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tristate "IPv6: IPsec transport mode"
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default IPV6
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select XFRM
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---help---
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Support for IPsec transport mode.
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If unsure, say Y.
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config INET6_XFRM_MODE_TUNNEL
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tristate "IPv6: IPsec tunnel mode"
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default IPV6
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select XFRM
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---help---
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Support for IPsec tunnel mode.
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If unsure, say Y.
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2006-10-04 14:47:05 +08:00
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config INET6_XFRM_MODE_BEET
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tristate "IPv6: IPsec BEET mode"
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default IPV6
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select XFRM
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---help---
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Support for IPsec BEET mode.
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If unsure, say Y.
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2006-08-24 08:59:44 +08:00
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config INET6_XFRM_MODE_ROUTEOPTIMIZATION
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2012-10-03 02:19:49 +08:00
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tristate "IPv6: MIPv6 route optimization mode"
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2006-08-24 08:59:44 +08:00
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select XFRM
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---help---
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Support for MIPv6 route optimization mode.
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2013-08-19 14:07:34 +08:00
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config IPV6_VTI
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tristate "Virtual (secure) IPv6: tunneling"
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select IPV6_TUNNEL
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2014-02-19 20:33:23 +08:00
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select NET_IP_TUNNEL
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2013-08-19 14:07:34 +08:00
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depends on INET6_XFRM_MODE_TUNNEL
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---help---
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Tunneling means encapsulating data of one protocol type within
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another protocol and sending it over a channel that understands the
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encapsulating protocol. This can be used with xfrm mode tunnel to give
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the notion of a secure tunnel for IPSEC and then use routing protocol
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on top.
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2006-10-11 05:47:44 +08:00
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config IPV6_SIT
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tristate "IPv6: IPv6-in-IPv4 tunnel (SIT driver)"
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2007-02-14 04:55:25 +08:00
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select INET_TUNNEL
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2013-03-25 22:50:00 +08:00
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select NET_IP_TUNNEL
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2008-03-16 11:59:18 +08:00
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select IPV6_NDISC_NODETYPE
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2006-10-11 05:47:44 +08:00
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default y
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---help---
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Tunneling means encapsulating data of one protocol type within
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another protocol and sending it over a channel that understands the
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encapsulating protocol. This driver implements encapsulation of IPv6
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2008-04-27 13:50:57 +08:00
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into IPv4 packets. This is useful if you want to connect two IPv6
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2006-10-11 05:47:44 +08:00
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networks over an IPv4-only path.
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2009-06-05 06:44:53 +08:00
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Saying M here will produce a module called sit. If unsure, say Y.
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2006-10-11 05:47:44 +08:00
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2009-09-23 07:43:14 +08:00
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config IPV6_SIT_6RD
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2012-10-03 02:19:49 +08:00
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bool "IPv6: IPv6 Rapid Deployment (6RD)"
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depends on IPV6_SIT
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2009-09-23 07:43:14 +08:00
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default n
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---help---
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IPv6 Rapid Deployment (6rd; draft-ietf-softwire-ipv6-6rd) builds upon
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mechanisms of 6to4 (RFC3056) to enable a service provider to rapidly
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deploy IPv6 unicast service to IPv4 sites to which it provides
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customer premise equipment. Like 6to4, it utilizes stateless IPv6 in
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IPv4 encapsulation in order to transit IPv4-only network
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infrastructure. Unlike 6to4, a 6rd service provider uses an IPv6
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prefix of its own in place of the fixed 6to4 prefix.
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With this option enabled, the SIT driver offers 6rd functionality by
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providing additional ioctl API to configure the IPv6 Prefix for in
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stead of static 2002::/16 for 6to4.
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If unsure, say N.
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2008-03-16 11:59:18 +08:00
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config IPV6_NDISC_NODETYPE
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bool
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2005-04-17 06:20:36 +08:00
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config IPV6_TUNNEL
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2008-03-21 07:13:58 +08:00
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tristate "IPv6: IP-in-IPv6 tunnel (RFC2473)"
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2006-03-28 17:12:13 +08:00
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select INET6_TUNNEL
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2016-02-12 22:43:54 +08:00
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select DST_CACHE
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2017-02-08 07:37:15 +08:00
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select GRO_CELLS
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2005-04-17 06:20:36 +08:00
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---help---
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2008-03-21 07:13:58 +08:00
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Support for IPv6-in-IPv6 and IPv4-in-IPv6 tunnels described in
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RFC 2473.
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2005-04-17 06:20:36 +08:00
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If unsure, say N.
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2012-08-10 08:51:50 +08:00
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config IPV6_GRE
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tristate "IPv6: GRE tunnel"
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select IPV6_TUNNEL
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2013-03-25 22:50:00 +08:00
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select NET_IP_TUNNEL
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2016-05-03 23:19:57 +08:00
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depends on NET_IPGRE_DEMUX
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2012-08-10 08:51:50 +08:00
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---help---
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Tunneling means encapsulating data of one protocol type within
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another protocol and sending it over a channel that understands the
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encapsulating protocol. This particular tunneling driver implements
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GRE (Generic Routing Encapsulation) and at this time allows
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encapsulating of IPv4 or IPv6 over existing IPv6 infrastructure.
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This driver is useful if the other endpoint is a Cisco router: Cisco
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likes GRE much better than the other Linux tunneling driver ("IP
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tunneling" above). In addition, GRE allows multicast redistribution
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through the tunnel.
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Saying M here will produce a module called ip6_gre. If unsure, say N.
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fou: add Kconfig options for IPv6 support
A previous patch added the fou6.ko module, but that failed to link
in a couple of configurations:
net/built-in.o: In function `ip6_tnl_encap_add_fou_ops':
net/ipv6/fou6.c:88: undefined reference to `ip6_tnl_encap_add_ops'
net/ipv6/fou6.c:94: undefined reference to `ip6_tnl_encap_add_ops'
net/ipv6/fou6.c:97: undefined reference to `ip6_tnl_encap_del_ops'
net/built-in.o: In function `ip6_tnl_encap_del_fou_ops':
net/ipv6/fou6.c:106: undefined reference to `ip6_tnl_encap_del_ops'
net/ipv6/fou6.c:107: undefined reference to `ip6_tnl_encap_del_ops'
If CONFIG_IPV6=m, ip6_tnl_encap_add_ops/ip6_tnl_encap_del_ops
are in a module, but fou6.c can still be built-in, and that
obviously fails to link.
Also, if CONFIG_IPV6=y, but CONFIG_IPV6_TUNNEL=m or
CONFIG_IPV6_TUNNEL=n, the same problem happens for a different
reason.
This adds two new silent Kconfig symbols to work around both
problems:
- CONFIG_IPV6_FOU is now always set to 'm' if either CONFIG_NET_FOU=m
or CONFIG_IPV6=m
- CONFIG_IPV6_FOU_TUNNEL is set implicitly when IPV6_FOU is enabled
and NET_FOU_IP_TUNNELS is also turned out, and it will ensure
that CONFIG_IPV6_TUNNEL is also available.
The options could be made user-visible as well, to give additional
room for configuration, but it seems easier not to bother users
with more choice here.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: aa3463d65e7b ("fou: Add encap ops for IPv6 tunnels")
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-25 22:50:46 +08:00
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config IPV6_FOU
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tristate
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default NET_FOU && IPV6
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config IPV6_FOU_TUNNEL
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tristate
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default NET_FOU_IP_TUNNELS && IPV6_FOU
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fou: fix IPv6 Kconfig options
The Kconfig options I added to work around broken compilation ended
up screwing up things more, as I used the wrong symbol to control
compilation of the file, resulting in IPv6 fou support to never be built
into the kernel.
Changing CONFIG_NET_FOU_IPV6_TUNNELS to CONFIG_IPV6_FOU fixes that
problem, I had renamed the symbol in one location but not the other,
and as the file is never being used by other kernel code, this did not
lead to a build failure that I would have caught.
After that fix, another issue with the same patch becomes obvious, as we
'select INET6_TUNNEL', which is related to IPV6_TUNNEL, but not the same,
and this can still cause the original build failure when IPV6_TUNNEL is
not built-in but IPV6_FOU is. The fix is equally trivial, we just need
to select the right symbol.
I have successfully build 350 randconfig kernels with this patch
and verified that the driver is now being built.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Valentin Rothberg <valentinrothberg@gmail.com>
Fixes: fabb13db448e ("fou: add Kconfig options for IPv6 support")
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-01 04:42:11 +08:00
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select IPV6_TUNNEL
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fou: add Kconfig options for IPv6 support
A previous patch added the fou6.ko module, but that failed to link
in a couple of configurations:
net/built-in.o: In function `ip6_tnl_encap_add_fou_ops':
net/ipv6/fou6.c:88: undefined reference to `ip6_tnl_encap_add_ops'
net/ipv6/fou6.c:94: undefined reference to `ip6_tnl_encap_add_ops'
net/ipv6/fou6.c:97: undefined reference to `ip6_tnl_encap_del_ops'
net/built-in.o: In function `ip6_tnl_encap_del_fou_ops':
net/ipv6/fou6.c:106: undefined reference to `ip6_tnl_encap_del_ops'
net/ipv6/fou6.c:107: undefined reference to `ip6_tnl_encap_del_ops'
If CONFIG_IPV6=m, ip6_tnl_encap_add_ops/ip6_tnl_encap_del_ops
are in a module, but fou6.c can still be built-in, and that
obviously fails to link.
Also, if CONFIG_IPV6=y, but CONFIG_IPV6_TUNNEL=m or
CONFIG_IPV6_TUNNEL=n, the same problem happens for a different
reason.
This adds two new silent Kconfig symbols to work around both
problems:
- CONFIG_IPV6_FOU is now always set to 'm' if either CONFIG_NET_FOU=m
or CONFIG_IPV6=m
- CONFIG_IPV6_FOU_TUNNEL is set implicitly when IPV6_FOU is enabled
and NET_FOU_IP_TUNNELS is also turned out, and it will ensure
that CONFIG_IPV6_TUNNEL is also available.
The options could be made user-visible as well, to give additional
room for configuration, but it seems easier not to bother users
with more choice here.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: aa3463d65e7b ("fou: Add encap ops for IPv6 tunnels")
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-25 22:50:46 +08:00
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2006-10-17 13:12:21 +08:00
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config IPV6_MULTIPLE_TABLES
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bool "IPv6: Multiple Routing Tables"
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select FIB_RULES
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---help---
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Support multiple routing tables.
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2006-08-24 08:23:39 +08:00
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config IPV6_SUBTREES
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bool "IPv6: source address based routing"
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2006-10-17 13:12:21 +08:00
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depends on IPV6_MULTIPLE_TABLES
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2006-08-24 08:23:39 +08:00
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---help---
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Enable routing by source address or prefix.
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The destination address is still the primary routing key, so mixing
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normal and source prefix specific routes in the same routing table
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may sometimes lead to unintended routing behavior. This can be
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avoided by defining different routing tables for the normal and
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source prefix specific routes.
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If unsure, say N.
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2008-04-03 08:22:53 +08:00
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config IPV6_MROUTE
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2012-10-03 02:19:49 +08:00
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bool "IPv6: multicast routing"
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depends on IPV6
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2008-04-03 08:22:53 +08:00
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---help---
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Experimental support for IPv6 multicast forwarding.
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If unsure, say N.
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ipv6: ip6mr: support multiple tables
This patch adds support for multiple independant multicast routing instances,
named "tables".
Userspace multicast routing daemons can bind to a specific table instance by
issuing a setsockopt call using a new option MRT6_TABLE. The table number is
stored in the raw socket data and affects all following ip6mr setsockopt(),
getsockopt() and ioctl() calls. By default, a single table (RT6_TABLE_DFLT)
is created with a default routing rule pointing to it. Newly created pim6reg
devices have the table number appended ("pim6regX"), with the exception of
devices created in the default table, which are named just "pim6reg" for
compatibility reasons.
Packets are directed to a specific table instance using routing rules,
similar to how regular routing rules work. Currently iif, oif and mark
are supported as keys, source and destination addresses could be supported
additionally.
Example usage:
- bind pimd/xorp/... to a specific table:
uint32_t table = 123;
setsockopt(fd, SOL_IPV6, MRT6_TABLE, &table, sizeof(table));
- create routing rules directing packets to the new table:
# ip -6 mrule add iif eth0 lookup 123
# ip -6 mrule add oif eth0 lookup 123
Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-05-11 20:40:55 +08:00
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config IPV6_MROUTE_MULTIPLE_TABLES
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bool "IPv6: multicast policy routing"
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depends on IPV6_MROUTE
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select FIB_RULES
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help
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Normally, a multicast router runs a userspace daemon and decides
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what to do with a multicast packet based on the source and
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destination addresses. If you say Y here, the multicast router
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will also be able to take interfaces and packet marks into
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account and run multiple instances of userspace daemons
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simultaneously, each one handling a single table.
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If unsure, say N.
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2008-04-03 08:22:54 +08:00
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config IPV6_PIMSM_V2
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2012-10-03 02:19:49 +08:00
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bool "IPv6: PIM-SM version 2 support"
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2008-04-03 08:22:54 +08:00
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depends on IPV6_MROUTE
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---help---
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Support for IPv6 PIM multicast routing protocol PIM-SMv2.
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If unsure, say N.
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2016-11-15 23:14:04 +08:00
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config IPV6_SEG6_LWTUNNEL
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bool "IPv6: Segment Routing Header encapsulation support"
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depends on IPV6
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select LWTUNNEL
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---help---
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Support for encapsulation of packets within an outer IPv6
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header and a Segment Routing Header using the lightweight
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tunnels mechanism.
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If unsure, say N.
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2016-11-08 21:57:41 +08:00
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config IPV6_SEG6_INLINE
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bool "IPv6: direct Segment Routing Header insertion "
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2016-11-15 23:14:04 +08:00
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depends on IPV6_SEG6_LWTUNNEL
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2016-11-08 21:57:41 +08:00
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---help---
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Support for direct insertion of the Segment Routing Header,
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also known as inline mode. Be aware that direct insertion of
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extension headers (as opposed to encapsulation) may break
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multiple mechanisms such as PMTUD or IPSec AH. Use this feature
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only if you know exactly what you are doing.
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If unsure, say N.
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2016-11-08 21:57:42 +08:00
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config IPV6_SEG6_HMAC
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bool "IPv6: Segment Routing HMAC support"
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depends on IPV6
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select CRYPTO_HMAC
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select CRYPTO_SHA1
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select CRYPTO_SHA256
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---help---
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Support for HMAC signature generation and verification
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of SR-enabled packets.
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If unsure, say N.
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2008-04-14 14:30:47 +08:00
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endif # IPV6
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