Commit 58e354c0 authored by David Ahern's avatar David Ahern Committed by David S. Miller

net/ipv6: Handle reject routes with onlink flag

Verification of nexthops with onlink flag need to handle unreachable
routes. The lookup is only intended to validate the gateway address
is not a local address and if the gateway resolves the egress device
must match the given device. Hence, hitting any default reject route
is ok.

Fixes: fc1e64e1 ("net/ipv6: Add support for onlink flag")
Signed-off-by: default avatarDavid Ahern <dsahern@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c861ef83
...@@ -2488,7 +2488,8 @@ static int ip6_route_check_nh_onlink(struct net *net, ...@@ -2488,7 +2488,8 @@ static int ip6_route_check_nh_onlink(struct net *net,
err = 0; err = 0;
grt = ip6_nh_lookup_table(net, cfg, gw_addr, tbid, 0); grt = ip6_nh_lookup_table(net, cfg, gw_addr, tbid, 0);
if (grt) { if (grt) {
if (grt->rt6i_flags & flags || dev != grt->dst.dev) { if (!grt->dst.error &&
(grt->rt6i_flags & flags || dev != grt->dst.dev)) {
NL_SET_ERR_MSG(extack, "Nexthop has invalid gateway"); NL_SET_ERR_MSG(extack, "Nexthop has invalid gateway");
err = -EINVAL; err = -EINVAL;
} }
......
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