From: Ken Guest (ken at domain antefacto.com)
Date: Tue 15 May 2001 - 12:02:22 IST
Dermot Buckley wrote:
> Hi all,
>
> I have a new problem here which someone might be able to help me with. A
> Debian (2.2.19) system with an isdn dial-on-demand connection (pppd's
> 'demand' setting) which connects to indigo and acts as our internet gateway.
> All was working wonderfully for the last few months until I rebooted the
> system last Weds. Since then the system dials up ok, but the connection
> doesn't go down anymore (the idle setting is 360secs).
>
> I did a little checking and it appears that broadcast packets from the isp
> are keeping the connection alive. The logs are full of these, one every
> 10secs:
>
> May 14 15:03:00 setanta kernel: Packet log: input - ppp0 PROTO=89
> 194.125.144.69:65535 224.0.0.5:65535 L=64 S=0xC0 I=52990 F=0x0000 T=1 (#29)
>
> I gather these are to do with routing table updates, so I killed routed and
> restarted the connection but we're still getting the broadcasts.
>
> Does anyone have any idea what triggers these broadcasts? I'm at a dead end
> here so all help appreciated.
>
IIRC it's SMB and Netbios packets as sent out from Windows PCs so you
may want to filter out against the appropriate ports.
--
Beware the fury of a patient man
- John Dryden
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