IPv4 loopback address is missing, why?

[James]

On Sat, 2008-02-16 at 10:41 -0700, Andrew Falanga wrote:
> HI,
> 
> On my father's computer there isn't an IPv4 loopback address being assigned to 
> the lo0 interface.  What would cause this?  I've looked at his configs and 
> they're the same as on my system (obviously something is different, but I 
> don't know what).  I see in his /etc/defaults/rc.conf the "ifconfig_lo0" line 
> is *NOT* commented out or otherwise altered and his file looks the same as 
> mine (at least on this point, I haven't contrasted the two entirely).
> 
> So, why would his system not be configuring an IPv4 loopback address?  After 
> bootup, I can add the address manually using ifconfig.
> 
> Andy

I don't know, but the first place I'd look is /etc/hosts and make sure
it's configured correctly there. It's also configured
in /etc/network.subr

Did you do a make buildworld recently and not complete it entirely?

James