On 4/16/18 1:20 PM, David Miller wrote:

From: David Ahern <redacted>
Date: Mon, 16 Apr 2018 08:22:41 -0700

quoted

@@ -2394,6 +2395,7 @@ static void addrconf_add_mroute(struct net_device *dev)
 		.fc_ifindex = dev->ifindex,
 		.fc_dst_len = 8,
 		.fc_flags = RTF_UP,
+		.fc_type = RTN_UNICAST,
 		.fc_nlinfo.nl_net = dev_net(dev),
 	};
 

Multicast route is of type RTN_UNICAST?

The ff00::/8 route is. Today's code:
# ip -d -6 ro ls table local
..
unicast ff00::/8 dev eth3 proto boot scope global metric 256 pref medium
unicast ff00::/8 dev eth4 proto boot scope global metric 256 pref medium

With this patch set:
# ip -d -6 ro ls table local
...
unicast ff00::/8 dev eth3 proto boot scope global metric 256 pref medium
unicast ff00::/8 dev eth4 proto boot scope global metric 256 pref medium

All of these cases where passing in a zero initialized value of
fc_type up until this patch.  Perhaps you should discuss that in your
commit message a little bit.

ok