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[ts-7000] Re: Still having problems with dhcp on TS7400

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Subject: [ts-7000] Re: Still having problems with dhcp on TS7400
From: "Peter Santangeli" <>
Date: Thu, 24 Jan 2008 17:41:11 -0000
Unfortunately, no joy. Here's the output I get when I run ifup
--verbose eth0

Configuring interface eth0=eth0 (inet)                               
          
run-parts --verbose /etc/network/if-pre-up.d                         
          
run-parts: executing /etc/network/if-pre-up.d/bridge                 
          
run-parts: executing /etc/network/if-pre-up.d/wireless-tools         
          
run-parts: executing /etc/network/if-pre-up.d/wpasupplicant          
          
                                                                     
          
dhclient3 -pf /var/run/dhclient.eth0.pid -lf
/var/run/dhclient.eth0.leases eth0 
Internet Systems Consortium DHCP Client V3.0.4                       
          
Copyright 2004-2006 Internet Systems Consortium.                     
          
All rights reserved.                                                 
          
For info, please visit http://www.isc.org/sw/dhcp/                   
          
                                                                     
          
Listening on LPF/eth0/00:d0:69:40:e8:e5                              
          
Sending on   LPF/eth0/00:d0:69:40:e8:e5                              
          
Sending on   Socket/fallback                                         
          
receive_packet failed on eth0: Network is down                       
          
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5           
          
send_packet: Message too long   


--- In  "charliem_1216" <> wrote:
>
> --- In  "Peter Santangeli" <peter@> 
> wrote:
> >
> > I asked this a few months ago, and never really got a response. 
> I'm
> > having a heck of a time getting dhcp running on a ts7400. I'm 
> running
> > from the SD card, and pump seems to be failing with:
> > 
> > DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4
> > send_packet: Message too long
> > 
> > I've tried using pump, dhcpcd, dhcp3-client, all fail the same 
> way,
> > like it is a driver problem.
> > 
> > Does anyone have dhcp running on a ts board running debian?
> > 
> > Pete
> >
> 
> Hi Pete --
> 
> This is usually because your MTU is set too low.  What 
> does 'ifconfig eth0' say?  MTU=64 is a common but bad value, and 
> gives the 'Message too long' message.  Try 'ifconfig eth0 MTU 1400'.
> 
> Set your dhcp client config to ignore the MTU returned by the 
> (presumably crappy) dhcp server.  (ie for dhcp3-client, remove 
> the 'interface-mtu' from /etc/dhcp3/dhclient.conf).  
> 
> Or if you can control the MTU value the dhcp server hands out, set 
> it to something reasonable.
> 
> Regards, ....... Charlie
>




 
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