L3 master devices are virtual devices similar to the loopback device. Link local and multicast routes for these devices do not make sense. The ipv6 addrconf code already skips adding a linklocal address; do the same for the mcast route.
Signed-off-by: David Ahern <d...@cumulusnetworks.com> --- net/ipv6/addrconf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 47f837a58e0a..b12553905e42 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -2254,7 +2254,7 @@ static struct inet6_dev *addrconf_add_dev(struct net_device *dev) return ERR_PTR(-EACCES); /* Add default multicast route */ - if (!(dev->flags & IFF_LOOPBACK)) + if (!(dev->flags & IFF_LOOPBACK) && !netif_is_l3_master(dev)) addrconf_add_mroute(dev); return idev; -- 2.1.4