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 > > -- > Please post to: Hampshire@mailman.lug.org.uk > Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire > LUG URL: http://www.hantslug.org.uk > -------------------------------------------------------------- >
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. r...@ubuntu:~# echo 1 > /proc/sys/net/ipv4/ip_forward r...@ubuntu:~# echo 1 > /proc/sys/net/ipv4/tcp_syncookies r...@ubuntu:~# echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts -- -------------------------------------------------------------- Discover Linux - Open Source Solutions to Business and Schools http://discoverlinux.co.uk -------------------------------------------------------------- -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --------------------------------------------------------------
