Commit 057ba29b authored Sep 17, 2015 by Jiri Benc Committed by David S. Miller Sep 17, 2015

vxlan: reject IPv6 addresses if IPv6 is not configured



When IPv6 address is set without IPv6 configured, the vxlan socket is mostly
treated as an IPv4 one but various lookus in fdb etc. still take the
AF_INET6 into account. This creates incosistencies with weird consequences.

Just reject IPv6 addresses in such case.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 9dc2ad10

drivers/net/vxlan.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -2636,8 +2636,11 @@ static int vxlan_dev_configure(struct net src_net, struct net_device dev,
		dst->remote_ip.sa.sa_family = AF_INET;

		if (dst->remote_ip.sa.sa_family == AF_INET6 \|\|
		vxlan->cfg.saddr.sa.sa_family == AF_INET6)
		vxlan->cfg.saddr.sa.sa_family == AF_INET6) {
		if (!IS_ENABLED(CONFIG_IPV6))
		return -EPFNOSUPPORT;
		use_ipv6 = true;
		}

		if (conf->remote_ifindex) {
		struct net_device *lowerdev

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