net: ipv6: Do not consider link state for nexthop validation
Similar to IPv4, do not consider link state when validating next hops.
Currently, if the link is down default routes can fail to insert:
$ ip -6 ro add vrf blue default via 2100:2::64 dev eth2
RTNETLINK answers: No route to host
With this patch the command succeeds.
Fixes: 8c14586fc320 ("net: ipv6: Use passed in table for nexthop lookups")
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 3ac19eb8..947ed1d 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -658,7 +658,8 @@
struct net_device *dev = rt->dst.dev;
if (dev && !netif_carrier_ok(dev) &&
- idev->cnf.ignore_routes_with_linkdown)
+ idev->cnf.ignore_routes_with_linkdown &&
+ !(strict & RT6_LOOKUP_F_IGNORE_LINKSTATE))
goto out;
if (rt6_check_expired(rt))
@@ -1052,6 +1053,7 @@
int strict = 0;
strict |= flags & RT6_LOOKUP_F_IFACE;
+ strict |= flags & RT6_LOOKUP_F_IGNORE_LINKSTATE;
if (net->ipv6.devconf_all->forwarding == 0)
strict |= RT6_LOOKUP_F_REACHABLE;
@@ -1791,7 +1793,7 @@
};
struct fib6_table *table;
struct rt6_info *rt;
- int flags = RT6_LOOKUP_F_IFACE;
+ int flags = RT6_LOOKUP_F_IFACE | RT6_LOOKUP_F_IGNORE_LINKSTATE;
table = fib6_get_table(net, cfg->fc_table);
if (!table)