[X4U] en0 loses connectivity after reboot?

[Jeff Winchester]

I've recently started to have a couple of rather odd problems, 
primarily with my wired ethernet (en0) connection.

The primary problem occurs after a reboot. Once I have logged back in, 
I basically end up with an "amber dot" in network preferences for my 
wired ethernet. It's connected to the LAN but hasn't gotten an IP and 
can't get anywhere. The only way I can restore connectivity is to go to 
the network port configurations, remove the built-in ethernet, apply, 
then re-add and apply again.

I'm running Panther with all recent updates applied, including today's 
security update. I'm on a PowerBook G4 1.25GHz. The problem has been 
occurring for probably about a month now.

Odder yet is a second problem that is plaguing both en0 and en1 
(AirPort). I typically use DHCP with manual address in order for port 
forwarding from my router to work consistently. This past Wednesday I 
noticed that I was connected, could ping, had DNS resolution, but was 
actually unable to get outside the firewall. Browser connections just 
hung trying to connect, same with all traffic. The only way I could 
solve this was to set my system back to full DHCP. Same configuration 
as above.

Has anybody seen either of these oddities? Neither is a show-stopper 
kind of thing, as I can work around them both with a slight bit of 
hassle, but they do annoy me a bit.


-- 
Jeff Winchester
jeffw at tampabay.rr.com