Bound service deletion or service name removal

If a VPLS service is deleted while bound to an IP interface, the IP interface enters the Down: non-existent svc-ID operational state. If the IP interface was bound to the VPLS service name, the IP interface enters the Down: non-existent svc-name operational state. No console warning is generated.

If the created service type is VPLS, the IP interface is eligible to enter the operationally up state.