On 9 Nov 2008 at 19:56, MVallevand wrote:

> Excuse me for not reading this whole thread but I've found easiest way
> to cross subnets is using the mvprelay.c program that is in the mvpmc
> repo.
> 
> Martin


That requires me to have a computer on the secondary lan no?

I don't have a computer on that lan, nor do I want to put one there.

I've temorarily abandoned my original idea of having the router providing 
dhcp on the secondary lan while passing the dhcp options to the clients on 
the secondary network and went back to basics.

Setup dhcp relay on the router and I get a bit further, I see the router (and 
the dhcp server) passing the dhcpdiscover and dhcpoffier messages back and 
forth, but the client never does a dhcpack.

Further testing this morning seems to implicate the wireless bridge as part 
of the problem.  I took it out of the equation, hooked the mvp direct to the 
dmz port on the router, setup a logical lan for the dmz side and setup dhcp 
relay between the dmz and internal lans and lo and behold it works.....

whoops not quite, I see the mvp get an address and see loading application on 
the screen, then it goes back to trying to contact the dhcp server

The dhcp relay logs on the router show this

# (xid:2f8ed8b5) L2 socket: received request message from 0.0.0.0:68 to 
255.255.255.255 at dmz
(xid:2f8ed8b5) got a DHCPDISCOVER
(xid:2f8ed8b5) Warning! can't get server id from client message
(xid:2f8ed8b5) forwarding dhcp request from 10.88.65.254:67 to 10.11.12.10:67
(xid:2f8ed8b5) sent a dhcp packet of 251 bytes to server 10.11.12.10
(xid:2f8ed8b5) got a DHCPOFFER
(Not an error): dhcp packet xid mismatch(2f8ed8b5). try next server
(xid:2f8ed8b5) got a DHCPOFFER
(Not an error): dhcp packet xid mismatch(2f8ed8b5). try next server
(xid:2f8ed8b5) got a DHCPOFFER
(xid:2f8ed8b5) from server 10.11.12.10
(xid:2f8ed8b5) Send unicast to client, devidx 5 ip 10.88.65.145 mac 
0:d:fe:0:92:a8
(xid:2f8ed8b5) sending dhcp reply from 10.88.65.254:67 to 10.88.65.145:68
(xid:2f8ed8b5) Delete the arp entry used by unicast

On the dhcp server itself I see

Nov 10 10:12:33 sinclaire dhcpd: DHCPDISCOVER from 00:0d:fe:00:92:a8 via 
10.88.65.254
Nov 10 10:12:33 sinclaire dhcpd: DHCPOFFER on 10.88.65.145 to 
00:0d:fe:00:92:a8 via 10.88.65.254
Nov 10 10:14:37 sinclaire dhcpd: DHCPDISCOVER from 00:0d:fe:00:92:a8 via 
10.88.65.254
Nov 10 10:14:37 sinclaire dhcpd: DHCPOFFER on 10.88.65.145 to 
00:0d:fe:00:92:a8 via 10.88.65.254

Oddly, I see nothing whatsoever in the tftp server logs (I have logging 
turned up so I do see log entries for mvp's on the same lan)

At this point the mvp starts cycling through contacting mvp bootserver and 
contacting dhcp server over and over and I see no further dhcp traffic  on 
the router, dhcpserver or the tftp server.



-- 
Harondel J. Sibble 
Sibble Computer Consulting
Creating Solutions for the small and medium business computer user.
[EMAIL PROTECTED] (use pgp keyid 0x3AD5C11D) http://www.pdscc.com
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