Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

net: ipv6: Don't purge default router if accept_ra=2

Browse source 
Setting net.ipv6.conf.<interface>.accept_ra=2 causes the kernel
to accept RAs even when forwarding is enabled. However, enabling
forwarding purges all default routes on the system, breaking
connectivity until the next RA is received. Fix this by not
purging default routes on interfaces that have accept_ra=2.

Signed-off-by: Lorenzo Colitti <lorenzo@google.com>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lorenzo Colitti 2013-03-03 20:46:46 +00:00 committed by David S. Miller
parent de5fb0a053
commit 3e8b0ac3e4
1 changed files with 2 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
net/ipv6/route.c
View file

@ -1915,7 +1915,8 @@ void rt6_purge_dflt_routers(struct net *net)
restart:
read_lock_bh(&table->tb6_lock);
for (rt = table->tb6_root.leaf; rt; rt = rt->dst.rt6_next) {
if (rt->rt6i_flags & (RTF_DEFAULT | RTF_ADDRCONF)) {
if (rt->rt6i_flags & (RTF_DEFAULT | RTF_ADDRCONF) &&
(!rt->rt6i_idev || rt->rt6i_idev->cnf.accept_ra != 2)) {
dst_hold(&rt->dst);
read_unlock_bh(&table->tb6_lock);
ip6_del_rt(rt);