acc(4) acc: ACC LH/DH IMP interface.
ad(4) ad: Data Translation A/D converter.
arp(4p) arp: Address Resolution Protocol.
autoconf(4) autoconf: diagnostics from the autoconfiguration code.
bk(4) bk: line discipline for machine-machine communication (obsolete).
cons(4) cons: VAX-11 console interface.
crl(4) crl: VAX 8600 console RL02 interface.
css(4) css: DEC IMP-11A LH/DH IMP interface.
ct(4) ct: phototypesetter interface.
ddn(4) ddn: DDN Standard Mode X.25 IMP interface.
de(4) de: DEC DEUNA 10 Mb/s Ethernet interface.
dh(4) dh: DH-11/DM-11 communications multiplexer.
dhu(4) dhu: DHU-11 communications multiplexer.
dmc(4) dmc: DEC DMC-11/DMR-11 point-to-point communications device.
dmf(4) dmf: DMF-32, terminal multiplexor.
dmz(4) dmz: DMZ-32 terminal multiplexor.
dn(4) dn: DN-11 autocall unit interface.
drum(4) drum: paging device.
dz(4) dz: DZ-11 communications multiplexer.
ec(4) ec: 3Com 10 Mb/s Ethernet interface.
en(4) en: Xerox 3 Mb/s Ethernet interface.
ex(4) ex: Excelan 10 Mb/s Ethernet interface.
fl(4) fl: console floppy interface.
hdh(4) hdh: ACC IF-11/HDH IMP interface.
hk(4) hk: RK6-11/RK06 and RK07 moving head disk.
hp(4) hp: MASSBUS disk interface.
ht(4) ht: TM-03/TE-16,TU-45,TU-77 MASSBUS magtape interface.
hy(4) hy: Network Systems Hyperchannel interface.
icmp(4p) icmp: Internet Control Message Protocol.
idp(4p) idp: Xerox Internet Datagram Protocol.
ik(4) ik: Ikonas frame buffer, graphics device interface.
il(4) il: Interlan NI1010 10 Mb/s Ethernet interface.
imp(4) imp: 1822 network interface.
imp(4p) imp: IMP raw socket interface.
inet(4f) inet: Internet protocol family.
intro(4) intro: introduction to special files and hardware support.
intro(4n) networking: introduction to networking facilities.
ip(4p) ip: Internet Protocol.
ix(4) ix: Interlan Np100 10 Mb/s Ethernet interface.
kg(4) kg: KL-11/DL-11W line clock.
lo(4) lo: software loopback network interface.
lp(4) lp: line printer.
mem(4) mem, kmem: main memory.
mt(4) mt: TM78/TU-78 MASSBUS magtape interface.
mtio(4) mtio: UNIX magtape interface.
np(4) np: Interlan Np100 10 Mb/s Ethernet interface.
ns(4f) ns: Xerox Network Systems(tm) protocol family.
nsip(4) nsip: software network interface encapsulating ns packets in ip packets..
null(4) null: data sink.
pcl(4) pcl: DEC CSS PCL-11 B Network Interface.
ps(4) ps: Evans and Sutherland Picture System 2 graphics device interface.
pty(4) pty: pseudo terminal driver.
qe(4) qe: DEC DEQNA Q-bus 10 Mb/s Ethernet interface.
rx(4) rx: DEC RX02 floppy disk interface.
spp(4p) spp: Xerox Sequenced Packet Protocol.
tb(4) tb: line discipline for digitizing devices.
tcp(4p) tcp: Internet Transmission Control Protocol.
tm(4) tm: TM-11/TE-10 magtape interface.
tmscp(4) tmscp: DEC TMSCP magtape interface.
ts(4) ts: TS-11 magtape interface.
tty(4) tty: general terminal interface.
tu(4) tu: VAX-11/730 and VAX-11/750 TU58 console cassette interface.
uda(4) uda: UDA-50 disk controller interface.
udp(4p) udp: Internet User Datagram Protocol.
up(4) up: unibus storage module controller/drives.
ut(4) ut: UNIBUS TU45 tri-density tape drive interface.
uu(4) uu: TU58/DECtape II UNIBUS cassette interface.
va(4) va: Benson-Varian interface.
vp(4) vp: Versatec interface.
vv(4) vv: Proteon proNET 10 Megabit ring.