Some of the stuff (e.g., rarpd, bootpd, dhcpd etc., libsa) still will
only support Ethernet. Tcpdump itself should be ok, but libpcap needs
lot of work.
For the detailed change history, look at the commit log entries for
the is-newarp branch.
boot.c: update from sun3 port, with changes for my new boot code put in.
conf.c: config from openbsd, by Theo de Raadt
dev_net.c: update from openbsd (standard dev_net with changes from theo)
dev_net.h: proto from openbsd
