Definition of interfaces in ifconfig

[clayton rollins]

On Aug. 16, 2003, "Charles Howse" <chowse at charter.net> wrote:
>Hello List,
>
>When I do:
># ifconfig
>
>I see the following interfaces listed:
>
>tx0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
>        inet 192.168.254.3 netmask 0xffffff00 broadcast 192.168.254.255
>        inet6 fe80::2e0:29ff:fe11:ff8a%tx0 prefixlen 64 scopeid 0x1 
>        ether 00:e0:29:11:ff:8a
>        media: Ethernet autoselect (100baseTX <full-duplex>)
>        status: active
>lp0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> mtu 1500
>sl0: flags=c010<POINTOPOINT,LINK2,MULTICAST> mtu 552
>faith0: flags=8002<BROADCAST,MULTICAST> mtu 1500
>lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
>        inet6 ::1 prefixlen 128         inet6 fe80::1%lo0 prefixlen 64 
>scopeid 0x5         inet 127.0.0.1 netmask 0xff000000 ppp0: 
>flags=8010<POINTOPOINT,MULTICAST> mtu 1500
>
>I know tx0 is my one and only nic, we can keep it.
>I assume lp0 is the parallel port, don't need it, don't plan to do any
>printing from this machine.
>I assume lo0 is the loopback interface, that's cool.
>I know I don't need a PPP or SLIP interface, I have a LAN connection to
>the Internet.
>
>I've grepped LINT and GENERIC with no joy for the definitions, I've
>Googled with no joy so far, there are no man pages for these devices,
>where can I find out what they are?
>

man 4 lp
man faith
man sl
man ppp

If you don't have those man pages, you can view them at:
http://www.FreeBSD.org/cgi/man.cgi

>
>I realize the only ones actually running are tx0 and lo0, but wouldn't
>it be OK to remove the ones I'll never need?
>
>Can I get rid of some of these guys?  How?
>
>Thanks,
>Charles
>

Newbies isn't for technical advice. Try reasking this part or any specific
questions about the interfaces on freebsd-questions.

I was able to find reference to them in /etc/defaults/rc.conf, but I
wouldn't recommend you just hack into it without knowing what you're
doing...

Peace,
Clayton

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