linksys WRT54Gv3 router just stopped routing

Discussion in 'Networking Issues' started by peterius, May 8, 2008.

  1. peterius

    peterius Addicted to LI Member

    I have a WRT54Gv3 running dd-wrtv23 wsp2. Its an inner gateway, to network which it does dhcp/nat for. It routes outward to an apple airport base station which thinks the linksys is or something, its a dhcp client outward. The apple airport is and then out to the internet. There's no wireless involved, the radio on the linksys is off.

    Both the and are still working perfectly.

    The problem is that I went to sleep last night, woke up this morning and the linksys no longer has a WAN IP. I dreamt of flying mice last night so I thought maybe one chewed through the cord.

    I'm so annoyed because this took me so long to setup and get working the way I wanted it and its been working for 6 months. Literally NOTHING changed while I slept.

    The only hint I've gotten is that when I ping from the network I sometimes get, instead of destination unreachable: "Redirect Host(New nexthop:, interspersed sometimes with unreachables. But I get the feeling that this is just because the linksys has no proper netmask.

    The linksys routing table has two entries and not of its interfaces are on the network. I used to do all this stuff when I was young, fix all this internet crap but now I just want it working and I've forgotten exactly what the routing table entries mean. Particularly like the interface. Does that mean thats the interface used to get to that destination network?

    Further, in DD-WRTs web control panel, I never understand the "Gateway" entry under "Router IP" under "Network Setup". I've tried it both as and and I can't remember which it is that's been working for 6 months.

    So any help would be great. Why did this break for no reason all of a sudden and how do I fix it. (I think there's also surge protectors on the ethernet to the airport meaning that its unlikely that a surge came through the airport and fried the linksys ethernet interface._
  2. peterius

    peterius Addicted to LI Member

    Forget it. In trying to fix the thing, I did ifconfig eth0 down and that made inaccessible. So I reset it and its lost all my settings but at least its working now.
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