[jaycee]

Which dhcp client are you using with linux ?

You should not be giving DHCP *any* IP details, certainly not the IP of the DHCP server. This should be automatically discovered by the DHCP protocol, and manually assigning it will cause trouble.

edit: I have a feeling Mandrake will be using the "pump" dhcp client. Apparently, this is rubbish. I would look into using dhcpcd or dhclient, both of which work perfectly with NTL.

WINS proxy is unneccesary - this is a Windows file sharing thing. As such your Linux box will ignore it.

edit 2: i should read before posting, you are using dhclient. Check ports 67 and 68 are allowed through your firewall. I use dhclient on FreeBSD and it works perfectly with my NTL setup (I am using a cable modem, but it makes no difference)

edit 3: are you aware you have to cold boot the STB every time you change the NIC it is connected to ? It's possible the STB is simply ignoring the Linux box because of this.