On Fri, 2006-12-29 at 16:42 -0500, Matt Price wrote: > for stupid reasons I need to install via netboot on a compaq tablet > (hoping this will work, it's my last shot!). I have an ubuntu desktop > with two ethernet cards, eth0 & eth1, and have set up dhcp & tftp on > eth1 as documented in various places on the web, e.g. here: > > http://www.debian-administration.org/articles/478 > > > this works fine to a point. I have the ubuntu edgy netboot images > in /var/lib/tftpboot, my tablet starts up with pxe, finding the images, > and is ready to install but cannot find the broader internet 0-- it > doesn't seem to see past the eth1 subnet. So, probably a simple > question: how do I enable the eth1 traffic to bridge across to eth0 > and thus access the whole internet? I guess it has something to do with > ip forwarding or ip masquarading or one of those very scary and arcane > pieces of dark magic. > > I don't want to makethis pre-new year's post too long and am not sure > which pieces of info arethe most relevant but here's > the /etc/network/interfaces on the desktop: > > # This file describes the network interfaces available on your system > # and how to activate them. For more information, see interfaces(5). > > # The loopback network interface > auto lo > iface lo inet loopback > > # The primary network interface > auto eth0 > #iface eth0 inet dhcp > iface eth0 inet static > address 192.168.2.210 > netmask 255.255.255.0 > gateway 192.168.2.1 > > auto eth1 > #iface eth1 inet dhcp > # The second network card with static ip > iface eth1 inet static > address 192.168.0.1 > netmask 255.255.255.0 > network 192.168.0.0 > > -------------- > I should maybe say that eth0 attaches to a cheap wireless router -- > simple but not very flexible. The router is then in turn attached > through a cable modem to the local cable network. > > thanks and please let me know what other info I should provide. > Matt
Bridging is done using the tools from the bridge-utils package, and isn't very hard to do, but unless I have misunderstood something, all you want is to turn on ip forwarding? echo 1 > /proc/sys/net/ipv4/ip_forward There might be a more permanent and Debian friendly way to do this, but it'll work in a pinch. HTH, -- Cheers, Sven Arvidsson http://www.whiz.se PGP Key ID 760BDD22
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