netdev - [PATCH net] ipv6: gre: setup default multicast routes over PtP links

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Message-Id: <1444321179-26425-1-git-send-email-hannes@stressinduktion.org>
Date:	Thu,  8 Oct 2015 18:19:39 +0200
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	netdev@...r.kernel.org
Cc:	Hannes Frederic Sowa <hannes@...essinduktion.org>,
	Julien Muchembled <jm@...chemb.eu>,
	Eric Dumazet <edumazet@...gle.com>,
	Nicolas Dumazet <ndumazet@...gle.com>
Subject: [PATCH net] ipv6: gre: setup default multicast routes over PtP links

GRE point-to-point interfaces should also support ipv6 multicast. Setting
up default multicast routes on interface creation was forgotten. Add it.

Bugzilla: <https://bugzilla.kernel.org/show_bug.cgi?id=103231>
Cc: Julien Muchembled <jm@...chemb.eu>
Cc: Eric Dumazet <edumazet@...gle.com>
Cc: Nicolas Dumazet <ndumazet@...gle.com>
Signed-off-by: Hannes Frederic Sowa <hannes@...essinduktion.org>
---
 net/ipv6/addrconf.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index c8380f1..3aed22f 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -3119,6 +3119,8 @@ static void addrconf_gre_config(struct net_device *dev)
 	}
 
 	addrconf_addr_gen(idev, true);
+	if (dev->flags & IFF_POINTOPOINT)
+		addrconf_add_mroute(dev);
 }
 #endif
 
-- 
2.5.0

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