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-rw-r--r--net/ipv6/sit.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 367a6cc584cc..d6bfaec3bbbf 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -963,6 +963,7 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
}
t = netdev_priv(dev);
ipip6_tunnel_unlink(sitn, t);
+ synchronize_net();
t->parms.iph.saddr = p.iph.saddr;
t->parms.iph.daddr = p.iph.daddr;
memcpy(dev->dev_addr, &p.iph.saddr, 4);