[PATCH] ipv6: Fix for adding multicast route for loopback device automatically.
From: Li Wei <hidden>
Date: 2011-12-07 07:23:34
Subsystem:
networking [general], networking [ipv4/ipv6], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
There is no obvious reason to add a default multicast route for loopback devices, otherwise there would be a route entry whose dst.error set to -ENETUNREACH that would blocking all multicast packets. Signed-off-by: Li Wei <redacted> --- net/ipv6/addrconf.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index cf88df8..36806de 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c@@ -1805,7 +1805,8 @@ static struct inet6_dev *addrconf_add_dev(struct net_device *dev) return ERR_PTR(-EACCES); /* Add default multicast route */ - addrconf_add_mroute(dev); + if (!(dev->flags & IFF_LOOPBACK)) + addrconf_add_mroute(dev); /* Add link local route */ addrconf_add_lroute(dev);
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1.7.3.2