On 23/07/10 09:15, Tony Whitmore wrote:
>
> Hi,
>
> I'm trying to use dhcp3-relay in Ubuntu 10.04 LTS to relay requests from
> client system to our Windows 2003 DHCP Server. (Yes, I know, I know.) The
> relay works fine for Linux clients, but not so well for our Windows XP
> clients. Unfortunately there are many more of the latter than the former!
>
> The relay passes the request to the DHCP server, which registers it,
> assigns an IP address and passes the response back to the relay. The relay
> in turn passes the response back to the client. At this point the Linux
> clients accept the IP address and all is good. The Windows XP clients seem
> to ignore the response and just send out more requests.
>
> I have tried adding the "-a" option to the DHCP relay configuration, which
> is supposed to pass more information between the client and the DHCP
> server, but this didn't make any difference. Has anyone come across
> anything like this? If so, how did you fix it? ;)
>
> Thanks,
>
> Tony
>
> --
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> --------------------------------------------------------------
>
Perhaps it is the firewall or IPv4 settings needed by XP?
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -P FORWARD ACCEPT
dhcp3-realy install for Ubuntu says
Step 2: Enable forwarding.
root@ubuntu:~# echo 1 > /proc/sys/net/ipv4/ip_forward
root@ubuntu:~# echo 1 > /proc/sys/net/ipv4/tcp_syncookies
root@ubuntu:~# echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
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