Date: Wed, 21 Jun 2000 20:52:21 -0700 From: "Crist J. Clark" <cristjc@earthlink.net> To: freebsd-questions@freebsd.org Subject: Confused by Loopback Message-ID: <20000621205221.A43715@pool0586.cvx20-bradley.dialup.e>
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I think I must be missing something... But I am not sure what.
My loopback is configured so,
$ ifconfig lo0
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet 127.0.0.1 netmask 0xff000000
But if I look at the routing table,
$ netstat -rn
Routing tables
Internet:
Destination Gateway Flags Refs Use Netif Expire
default 207.217.148.27 UGSc 11 22 tun0
127.0.0.1 127.0.0.1 UH 0 0 lo0
207.217.148.27 209.179.254.29 UH 12 0 tun0
Notice there is no LAN entry for the 127-net like the ifconfig(8) mask
says. So if I were to do something silly like,
$ ping 127.0.0.2
It goes out over the tun0 interface. I noticed this because for some
perverse reason I tried,
$ ping 127.255.255.255
And started getting replies from other hosts! I tried a traceroute(8)
and watched 127.0.0.2 packets make their happy way out towards the
I'net.
Tell me I'm missing something silly here.
--
Crist J. Clark cjclark@alum.mit.edu
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