15ba31b9ad
- Make iface nodes removable on shutdown since FreeBSD now supports removable interfaces - Simplify supporting new protocols using family_enqueue(); add a few new ones including IPv6 - Add support for configurable interface mode using new NGM_IFACE_POINT2POINT and NGM_IFACE_BROADCAST control messages - Remove NGM_IFACE_GET_IFADDRS control message; it just duplicates the functionality of SIOCGIFCONF