Problems with OpenBSD dhclient
Brooks Davis
brooks at one-eyed-alien.net
Thu Jul 14 18:58:56 GMT 2005
On Thu, Jul 14, 2005 at 07:27:10PM +0100, Robert Watson wrote:
>
> On Thu, 14 Jul 2005, Kevin Oberman wrote:
>
> >More serious is that I can't roam. When I move between APs, dhclient
> >exits and I need to manually re-start it. I lose my SSH sessions. Ugh!
> >
> >Worse, I occasionally see my association drop momentarily when I am
> >simply sitting and typing. Once again, dhclient dies and I must manually
> >restart it and then re-establish my SSH and recover anything broken when
> >the connection dropped. This is fairly serious! I don't understand what
> >causes this, but it is infrequent which makes it hard to catch.
> >
> >It looks like killing dhclient when the interface drops is not a good
> >idea. At very least, it needs to give a little time for re-association
> >before dropping the DHCP client.
>
> I'm experiencing similar or identical problems. When at the British
> Library the day before yesterday, slight blips in my association would
> result in loss of my IP address, requiring manual restarting of dhclient.
>
> My normal approach for wireless/etc is to settle on a link -- be it wired
> ethernet or 802.11, and run dhclient on it to get things going. When
> done, I'll typically kill off dhclient. This worked pretty well with the
> old dhclient setup, but not so well with the new one. Because I range
> over a variety of network environments, from adhoc 802.11, wired ethernet,
> to base station based 802.11, I tend to want to say "do this for now", and
> have it stick until I move on. Maybe what I need to change is software
> configuration -- i.e., devd to re-launch dhclient. But obviously what I'm
> doing now isn't working, and results in a pretty poor user experience
> (blips or roaming and suddenly the network is gone).
I'm seeing this as well. I think we're going to need to handle wireless
and wired interfaces differently since their links work differently.
-- Brooks
--
Any statement of the form "X is the one, true Y" is FALSE.
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