On Mon, Jul 26, 2004 at 04:48:15PM +0100, Karl E. Jorgensen wrote:
> On Fri, Jul 23, 2004 at 10:55:28PM +0930, David Purton wrote:
> > This is finally driven me nuts enough to try and fix it.
> >
> > I use dhcp to get an ip address from my dlink dsl 300+ modem.
> >
> > The problem is, that it wants to renew it every 5 seconds and syslog
> > *fills* up with this sort of log message:
>
> If your dsl modem is your dhcp server (it sounds like it so far), then
> you need to re-configure the dhcp server settings on the the modem.
> Increase the lease time to something sensible, e.g. 6 hours or a day?
>
> > Jul 23 22:41:29 vetinari dhclient-2.2.x: DHCPREQUEST on eth1 to 203.87.20.175 port 67
> > Jul 23 22:41:29 vetinari dhclient-2.2.x: DHCPACK from 203.87.20.175
> > Jul 23 22:41:29 vetinari dhclient-2.2.x: bound to 203.87.20.174 -- renewal in 5 seconds.
>
> Those are mighty weird IP addresses for a local network !? Are you sure
> that we're not talking about your *external* ip address?
>
Ah - it's not a router - just a plain vanilla modem. I do routing on my
gateway which has two nics. THe 300+ will only give out one ip address I
think - a private one if no dsl line is found for the purposes of
configuring the modem or the public one obtained from the pppoe
connection.
> Also, as far as I can see on the technical specs of the dlink dsl 300+,
> it supports bridging dhcp... Do you use that? (It doesn't appear that
> you need to, but...)
>
> > I've tried stuffing around with dhclient.conf to try and specify the
> > lease time, but I can't get it working.
>
> That would not help. If the DHCP server only gives you a lease time for
> X seconds, holding on to the IP address for longer is dangerous - by
> then the DHCP server could have given that IP address to somebody else!
>
Fair enough. Finding documentation on configuring these modems is a
right pain though :(
> > I gather I can probably get it to log somewhere else, but I'd much
> > rather have it log *much* less frequently. I have a static ip address,
> > so it doesn't need to renew frequently at all.
>
> I take it that you have a static *external* ip address?
>
Yeah - really the modem is just acting like an adsl-ethernet bridge. The
only thing that was confusing me is that the modem is using pppoe to
connect to my ISP, rather than a straight bridged connection.
But as I said in a previous email, setting my ecternal interface up as a
static interface seems to be working ok. And hopefully will continue to
do so unless my ISP changes my IP address without telling me.
cheers
dc
--
David Purton
dcpurton@chariot.net.au
For the eyes of the LORD range throughout the earth to
strengthen those whose hearts are fully committed to him.
2 Chronicles 16:9a
Attachment:
signature.asc
Description: Digital signature