When receive a redirect message and call rt6_do_redirect(), we allocate
a new rt6_info and set new flags and gateway info, but not update these
info to fib6_info.
Then if a user try to get the route info via `ip route get`, he will still
get the old default gateway, because inet6_rtm_getroute() get gateway info
from fib6_info.
Fixes: 23fb93a4d3f11 ("net/ipv6: Cleanup exception and cache route handling")
Reported-by: Jianlin Shi <[email protected]>
Signed-off-by: Hangbin Liu <[email protected]>
---
net/ipv6/route.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 18e00ce..3d367c9 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -3446,6 +3446,10 @@ static void rt6_do_redirect(struct dst_entry *dst,
struct sock *sk, struct sk_bu
goto out;
}
+ /* Update fib6_info from rt6_info */
+ from->fib6_flags = rt->rt6i_flags;
+ from->fib6_nh.nh_gw = rt->rt6i_gateway;
+
netevent.old = &rt->dst;
netevent.new = &nrt->dst;
netevent.daddr = &msg->dest;
--
2.5.5
