vlan: Notify the parent when replacing a VLAN IDHEADmain

Changing the VID of an existing VLAN interface rehashes the interface and
announces the new VID, but does not unregister the old VID.  Parent
drivers and VLAN event consumers can consequently retain stale filter
membership.

After successfully inserting the new VID, emit vlan_unconfig for the old
VID before the existing vlan_config notification.  Do not unregister
anything if insertion fails and the old VID is restored.

MFC after:	2 weeks
Sponsored by:	BBOX.io

0 files changed, 0 insertions, 0 deletions