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Re: 6.0.1 upgrade dhcp problem
Date: Wed, 6 Feb 2013 19:22:01 +1000
From: Ray Phillips <r.phillips%uq.edu.au@localhost>
| Yes, I've only seen sk0 configured properly once (maybe twice)
That it has ever happened is interesting, as it suggests non-deterministic
behaviour, which suggests that something weird is happening.
| No, it's not. By the way, the two DHCP servers are a failover pair
| running ISC's DHCP server version 4.2.5, but that's irrelevant to
| DHCP clients to the best of my knowledge.
That they're both the same version, suggests that Roy's thought that
the reason that one of them was ignored was because of a missing server-id
in the reply isn't correct.
I must admit, than when I say the ignored offer, I just jumped at the
conclusion that it was ignored because it arrived second, after the
other offer had arrived (but I have not looked at dhcpcd's source to
see if that is plausible) and ignored that as immaterial. I didn't notice
that dhclient was picking the other offer.
| Using dhcpcd's --nohook mtu option didn't help:
That suggests that it isn't the MTU setting that is causing a problem
(which is as I guessed, it just made no sense for it to be that) but
something else. I'm still not convinced that it isn't related to
the spanning tree algorithm in some way, but I can't explain how that
would allow one system to work, but not the other.
| # dhcpcd -U fxp0
| So the -U option gave no output, even when I used it on the PC whose
| fxp0 NIC works (after configuring the NIC via sysinst's menu).
That is very odd, but could be explained because you're running this
with root on a cd, and so quite likely no writeable storage anywhere.
If you could mount a mfs or tmpfs on /var before starting the network
config (you may need to copy the real /var somewhere, mount a mfs,
then put the contents back to the mfs /var, so everything that should be
in /var remains there). Or perhaps just mounting on /var/run would be
enough, I think that's where dhcpcd puts all its data - and that dir can
safely start out empty.
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