We already print src_vni for a fdb entry when present.
This patch adds the ability to set src_vni on a fdb
entry. When not specified, kernel will use vni specified
on the vxlan device. This can be used on a vxlan fdb entry
when the vxlan device is in external or collect metadata
mode.
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David Ahern <dsahern@gmail.com>