vxlan: Follow kernel defaults for outer UDP checksum.

On recent kernels, UDP checksum computation has become more efficient and
the default behavior was changed, however, the ip command overrides this
by always specifying a particular behavior.

If the user does not specify that UDP checksums should either be computed
or not then we don't need to send an explicit netlink message - the kernel
can just use its default behavior.

Signed-off-by: Jesse Gross <jesse@kernel.org>
1 file changed