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ipvlan: fix building with modular IPV6 

We no longer depend on IPV6, but that now causes a link error with
CONFIG_IPV6=m and CONFIG_IPVLAN=y:

drivers/net/ipvlan/ipvlan_core.o: In function `ipvlan_queue_xmit':
ipvlan_core.c:(.text+0x1440): undefined reference to `ip6_route_output_flags'
drivers/net/ipvlan/ipvlan_core.o: In function `ipvlan_l3_rcv':
ipvlan_core.c:(.text+0x1818): undefined reference to `ip6_route_input_lookup'

This adds back the dependency on IPV6, with the option of building without
IPV6, but forcing IPVLAN to be a module when IPV6 is a module.

Fixes: 94333fac44 ("ipvlan: drop ipv6 dependency")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnd Bergmann 2018-02-26 10:41:30 +01:00 committed by David S. Miller
parent 3808b51911
commit 7f897db37b
1 changed files with 1 additions and 0 deletions
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drivers/net/Kconfig
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@ -149,6 +149,7 @@ config MACVTAP
config IPVLAN
tristate "IP-VLAN support"
depends on INET
depends on IPV6 || !IPV6
depends on NETFILTER
select NET_L3_MASTER_DEV
---help---