Re: Loopback problem

--On March 22, 2006 7:43:31 PM -0600 Paul Schmehl <pauls@xxxxxxxxxxxx> wrote:

I have two machines (that I know of) that have the same problem. The
loopback interface has no ipv4 address, and it doesn't start up on boot.
If I bring the interface up (ifconfig lo0 up),. it has no ipv4 address.
If I bring it up this way - ifconfig lo0 inet 127.0.0.1, then I have an
ipv4 address and everything works fine.

On box is 5.4 SECURITY. The other is 6.0 SECURITY. Both boxes have
ifconfig="lo0 inet 127.0.0.1" in the /etc/defaults/rc.conf file. Both
boxes boot fine and work fine, except for this one problem, which has
manifested odd symptoms from time to time but never merited investigation
(until now.)

Since I did the installs on both boxes, I've obviously missed something
during the install (or chosen the wrong option). Does anyone have a clue
what it might be? Or how I might fix this problem so the boxes will
bring up lo0 at boot?

I just figured out the problem with one box. (The other is down right now, so I can't get to it.) For some reason the following was in /etc/rc.conf (I don't know if that was done by setup or some other program):

network_interfaces="l0 xl0 xl1"

I changed that to:
network_interfaces="lo0 xl0 xl1"

and now the box activates lo0 on boot, including the ipv4 address.

I'll have to check the other box tomorrow morning.

Paul Schmehl (pauls@xxxxxxxxxxxx)
Adjunct Information Security Officer
University of Texas at Dallas
AVIEN Founding Member
http://www.utdallas.edu/