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vxlan: reject IPv6 addresses if IPv6 is not configured

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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>
This commit is contained in:
Jiri Benc 2015-09-17 16:11:11 +02:00 committed by David S. Miller
parent 9dc2ad1008
commit 057ba29bbe
1 changed files with 4 additions and 1 deletions
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5
drivers/net/vxlan.c
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@ -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