hey linux networking peeps

[solarbird]

I’m finally getting back to working on a new gateway/router server and I’m basically setting up this old-school sort of DMZ, with the rest of our servers hanging off one card, and our internal LAN/DHCP/NAT side hanging off the other. (Using ISC, which Debian seems to like.) And all of that seems to be right from the new server’s perspective, which is yay!

Except there’s no packet forwarding from the DHCP side even though it’s enabled and I’m sure I enabled it and yes the kernel thinks its enabled but it isn’t happening.

Any ideas where to start?

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Comments

Re: HALLO IS IT PLUGGED IN

[vatine]

If the problem is "thing tries to get DHCP from the other side of a router, but it fails", then, you would need something to relay the DHCP request, since it's sent to the ethernet broadcast MAC (and probably 255.255.255.255 as the IP destination) and isn't supposed to transit through routers.

Re: HALLO IS IT PLUGGED IN

[solarbird]

No, the new router box is the DHCP server. It's handing out addresses okay, too. Just packets from the DHCP world aren't getting past it. They get to it fine, just not past it.