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| author | Nicolas Dichtel <nicolas.dichtel@6wind.com> | 2012-09-26 00:04:55 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-10-01 16:49:23 -0400 |
| commit | 64c6d08e6490fb18cea09bb03686c149946bd818 (patch) | |
| tree | b831092af305441c9639796e9c5e68027bdc345d /net/ipv6 | |
| parent | 515e12401f43f2fe7511d228dfe3e186be8aab6e (diff) | |
| download | linux-64c6d08e6490fb18cea09bb03686c149946bd818.tar.gz linux-64c6d08e6490fb18cea09bb03686c149946bd818.tar.xz | |
ipv6: del unreachable route when an addr is deleted on lo
When an address is added on loopback (ip -6 a a 2002::1/128 dev lo), two routes
are added:
- one in the local table:
local 2002::1 via :: dev lo proto none metric 0
- one the in main table (for the prefix):
unreachable 2002::1 dev lo proto kernel metric 256 error -101
When the address is deleted, the route inserted in the main table remains
because we use rt6_lookup(), which returns NULL when dst->error is set, which
is the case here! Thus, it is better to use ip6_route_lookup() to avoid this
kind of filter.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/addrconf.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 719a828fb67f..480e68422efb 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -788,10 +788,16 @@ static void ipv6_del_addr(struct inet6_ifaddr *ifp) struct in6_addr prefix; struct rt6_info *rt; struct net *net = dev_net(ifp->idev->dev); + struct flowi6 fl6 = {}; + ipv6_addr_prefix(&prefix, &ifp->addr, ifp->prefix_len); - rt = rt6_lookup(net, &prefix, NULL, ifp->idev->dev->ifindex, 1); + fl6.flowi6_oif = ifp->idev->dev->ifindex; + fl6.daddr = prefix; + rt = (struct rt6_info *)ip6_route_lookup(net, &fl6, + RT6_LOOKUP_F_IFACE); - if (rt && addrconf_is_prefix_route(rt)) { + if (rt != net->ipv6.ip6_null_entry && + addrconf_is_prefix_route(rt)) { if (onlink == 0) { ip6_del_rt(rt); rt = NULL; |