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Subject[PATCH 4.17 38/63] ipv6: ila: select CONFIG_DST_CACHE
4.17-stable review patch.  If anyone has any objections, please let me know.


From: Arnd Bergmann <>

[ Upstream commit 83ed7d1fe2d2d4a11b30660dec20168bb473d9c1 ]

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: 79ff2fc31e0f ("ila: Cache a route to translated address")
Cc: Tom Herbert <>
Signed-off-by: Arnd Bergmann <>
Signed-off-by: David S. Miller <>
Signed-off-by: Greg Kroah-Hartman <>
net/ipv6/Kconfig | 1 +
1 file changed, 1 insertion(+)

--- a/net/ipv6/Kconfig
+++ b/net/ipv6/Kconfig
@@ -108,6 +108,7 @@ config IPV6_MIP6
config IPV6_ILA
tristate "IPv6: Identifier Locator Addressing (ILA)"
depends on NETFILTER
+ select DST_CACHE
Support for IPv6 Identifier Locator Addressing (ILA).

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