diff options
| author | David Ahern <dsahern@kernel.org> | 2020-07-07 07:39:24 -0600 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-07 13:04:16 -0700 |
| commit | aea23c323d89836bcdcee67e49def997ffca043b (patch) | |
| tree | 7e63e44e32b6bea19471ae17cc75cc30361dadd2 /net/ipv6/route.c | |
| parent | f815dd5cf48b905eeecf0a2b990e9b7ab048b4f1 (diff) | |
| download | linux-aea23c323d89836bcdcee67e49def997ffca043b.tar.bz2 | |
ipv6: Fix use of anycast address with loopback
Thomas reported a regression with IPv6 and anycast using the following
reproducer:
echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
ip -6 a add fc12::1/16 dev lo
sleep 2
echo "pinging lo"
ping6 -c 2 fc12::
The conversion of addrconf_f6i_alloc to use ip6_route_info_create missed
the use of fib6_is_reject which checks addresses added to the loopback
interface and sets the REJECT flag as needed. Update fib6_is_reject for
loopback checks to handle RTF_ANYCAST addresses.
Fixes: c7a1ce397ada ("ipv6: Change addrconf_f6i_alloc to use ip6_route_info_create")
Reported-by: thomas.gambier@nexedi.com
Signed-off-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/route.c')
| -rw-r--r-- | net/ipv6/route.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c index ea0be7cf3d93..f3279810d765 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -3405,7 +3405,7 @@ static bool fib6_is_reject(u32 flags, struct net_device *dev, int addr_type) if ((flags & RTF_REJECT) || (dev && (dev->flags & IFF_LOOPBACK) && !(addr_type & IPV6_ADDR_LOOPBACK) && - !(flags & RTF_LOCAL))) + !(flags & (RTF_ANYCAST | RTF_LOCAL)))) return true; return false; |