Re: [gentoo-user] Net / dhcp (miss)behaviour

[Tony Davison <tony.davison2@ntlworld.com>]

On Saturday 19 January 2008 22:09:50 Marko Kocić wrote:
> > I wonder if my similar problem is related to what you report here:  I am
> > using dhcpcd and ifplug with my ADSL router, which acts as the dhcp
> > server on my LAN.  For some reason ifplug does not always manage to get
> > an IP address from the router and I end up with an APIPA address. 
> > /etc/init.d/net.eth0 stop/start gets it going again.  This problem only
> > occurs if I disconnect and then reconnect the ethernet cable.  No such
> > problem exists when I boot the machine with the cable already connected
> > to the NIC.  I haven't changed timeouts or anything else from the dhcpcd
> > defaults.  I have always attributed this problem to a somewhat slow dhcp
> > server on the router.
>
> It is similar, with a difference that /etc/init.d/net.eth0 restart
> doesn't help. I tried
> enlarging timeout but with no help.
>
> > As a note:  WinXP machines do not have any such problem.  Even though
> > they may end up with a APIPA address, they will in minute or so drop it
> > and acquire a 10.10.10.XXX domain address from the router.  dhcpcpd does
> > not seem to have this flexibility.
>
> I noticed that in most cases after I boot to windows, when I reboot
> back to linux I can't connect.
> When I reboot back to windows, net is up.
>
> When it fails I noticed that it send DHCP requests, but doesn't get a
> response.
>
> I tried dhclient, dhcpd and pump, and the results are allways the
> same. It happens in the evenings, when internet traffic is high.

Windows is not releasing the lease correctly, so the CM ignores request from 
the same MAC address for a new leasr, workround is to reboot the cm whem you 
reboot to gentoo.

This works in the UK YMMV elsewhere.

--
Tony Davison
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