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ipv6: ila: select CONFIG_DST_CACHE 

My randconfig builds came across an old missing dependency for ILA:

ERROR: "dst_cache_set_ip6" [net/ipv6/ila/ila.ko] undefined!
ERROR: "dst_cache_get" [net/ipv6/ila/ila.ko] undefined!
ERROR: "dst_cache_init" [net/ipv6/ila/ila.ko] undefined!
ERROR: "dst_cache_destroy" [net/ipv6/ila/ila.ko] undefined!

We almost never run into this by accident because randconfig builds
end up selecting DST_CACHE from some other tunnel protocol, and this
one appears to be the only one missing the explicit 'select'.

>From all I can tell, this problem first appeared in linux-4.9
when dst_cache support got added to ILA.

Fixes: 79ff2fc31e ("ila: Cache a route to translated address")
Cc: Tom Herbert <tom@herbertland.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnd Bergmann 2018-07-18 10:48:56 +02:00 committed by David S. Miller
parent 3a9b045506
commit 83ed7d1fe2
1 changed files with 1 additions and 0 deletions
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net/ipv6/Kconfig
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@ -108,6 +108,7 @@ config IPV6_MIP6
config IPV6_ILA
tristate "IPv6: Identifier Locator Addressing (ILA)"
depends on NETFILTER
select DST_CACHE
select LWTUNNEL
---help---
Support for IPv6 Identifier Locator Addressing (ILA).