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My home LAN is set up with fixed IP addresses and an Untangle gateway/firewall/DNS server with Internet access.

One of my computers (Ubuntu 10.10) will connect to the Internet only through the wireless, but reports "network is unreachable" when connected to wired. Even though it will not connect to the internet, it will connect to other computers on the LAN, including the gateway when using the wired connection..

My laptop (11.10) and another system (10.10) connect either way.

I use the same IP address for both wired and wireless on the same computer, and always disable wireless when using wired. The laptop uses wicd because Network Manager fails on it.

I would like to be able to connect to the Internet using wired connection, how can I do this?

keepitsimpleengineer
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2 Answers2

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The wireless and wired will have different MAC addresses, and may be retaining the association with that (reused) IP address for a finite time. ( ? 12 hours )

Why not use a different IP address?

Or, you could use DHCP for clients, and assign IP addresses at gateway.

david6
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In a desperate attempt to get this working, I did the following:

  • Using Synaptic, I re-installed network manager.
  • I edited connections in Network Manager; first deleting the wired connection, then adding a new connection with the same parameters (IP address, netmask, gateway and DNS server).

Immediately the system connected to the LAN using the wired connection with internet access. (wireless is always turned off when wired connection is used)

keepitsimpleengineer
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