vti6: fix local/remote any addr handling

According to the IPv4 behavior of 'ip' it should be possible
to omit the arguments for local and remote address.
Without this patch omitting these parameters would lead to
uninitialized memory being interpreted as IPv6 addresses.

Reported-by: Christian Langrock <christian.langrock@secunet.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
1 file changed