ipv4_iface and ipv6_iface fields need to be set to NULL when destroyed.
Before creation these are checked. Use these to report correct states.
Signed-off-by: NJitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>