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From: "Charles Howse" <chowse@charter.net>
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Date: Sat, 16 Aug 2003 15:58:17 -0500
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Subject: Definition of interfaces in ifconfig
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Hi,

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 entered sysinstall/configure/network/network devices and found out
what they all are.
The faith0 device was listed as unknown.

I know tx0 is my one and only nic, we can keep it.
lp0 is the parallel port, don't need it, don't plan to do any printing
from this machine.
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, no modem.

I was able to do:
# ifconfig faith0 destroy
And eliminate the faith0 <unknown> device.

When I try that with sl0 and ppp0 I get an error: ifconfig:
SIOCIFDESTROY: Invalid Argument.

I realize that tx0 and lo0 are the only ones that are UP...are the
others occupying space in memory?
Can I get rid of some of these guys?  How?



Thanks,
Charles