I need a little help. I will explain this the best I can so people don't have to ask extra questions.

Essentially, I have a dell poweredge 2650, with 2 nics. eth0 goes to my cable modem, while eth1 goes to a dell powerconnect 3348.

I have installed isc-dhcp-server on my machine also. The goal is for this box to be my dhcp server and my gateway to the magical internet.

Here is my set up for /etc/network/interfaces

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp

auto eth1
iface eth1 inet static
mtu 1392 

I added the mtu in when I was trouble shooting.

  • when I type in ifconfig, eth0 has the external address from my comcast cable modem. eth1 is set to like i asked.
  • When I connect things to the server via the switch/ethernet, an ip address gets assigned between - without any problems
  • When I try to do anything from my gateway, apt-get update/install it connects and works no problem.
  • When I try apt-get from my other boxes, its super slow, like 1% a min or slower. I can't access internet pages via my macbook or hp laptop.

However I can ping and traceroute not problem.

via mac terminal ping -s 549 google.com does not work and gets a time out error but ping -s 548 google.com works fine.

I have no idea why this would be happening and I can't find anything around other then the mtu stuff which I don't understand.

Let me know if you have any questions or ideas.


Maybe you need to bridge the 2 Ethernet ports? How do I setup DHCP-Server interfaces so they are mapped/bridged to each other? There's a simple guide there.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.