Bill Paul f731f10490 Updates for vlan stuff:
- add support for devices that do vlan tag insertion/deletion in firmware
- add multicast support
- add vlan_unconfig() to complement vlan_config()
- update ifconfig(8) to configure vlan interfaces (vlan tag and
  parent device)

Also fix a small bug in ifconfig; sometimes sa_family is overwritten
by ioctls.

Reviewed by: wollman
1999-03-15 01:17:26 +00:00
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