Re: Buffalo router disupts internet connection on lease renewal

On Fri, 09 Mar 2007 17:32:28 -0600, Peabody
<waybackNO784SPAM44@xxxxxxxxx> wrote:

I understand, but that's not it. It keeps the same IP.
Always the same IP.

So much for that theory.

I think there may be something wrong with the way the router
is requesting the renewal. Without the router, this
didn't happen. Here's the router's log showing what happens
when I manually requested a renewal through the browser
interface (sorry, but it's in reverse order, with the oldest
entry at the bottom):

Argh. That's all wrong. However, I can't tell for sure where the
error is buried. In order from top down:

07:21:35 CONFIGURE WAN DHCPCD RENEW
(Client requests a DHCP renewal)
07:21:36 DHCPC fail to try rebinding
(Client tries to reopen old connection to DHCP server)
07:21:36 DHCPC dhcpStop: ioctl SIOCSIFNETMASK: Invalid argument
(Tries to set netmask for interface and fails)
07:21:36 DHCPC del resolve
Invalid argument
(clears DNS servers (resolver)? What on earth for?)
07:21:36 DHCPC OpenDhcpSocket: can't set initial netmask:
(Fails again setting netmask as it tries to contact DHCP server)
07:21:36 DHCPC Request: broadcasting DHCP_DISCOVER
(Client starts over with a new DHCP session)

It looks like something is going wrong, so it starts over.

Agreed.

The only thing that I'm doing that may be different from
normal is to spoof the router's MAC.

That shouldn't make any difference as long as you don't duplicate the
MAC address of the ISP's router or any machine connected to the
router. It might also get confused if you duplicate the MAC of
another connected Cox customer.

I just like to get a
different IP from time to time, and changing the MAC does
that.

Yeah, but what are your chances of picking a MAC address that's
already in use on the system? Be careful (or more random).

Can I assume firmware version 1.40?

I don't have an answer, but there sure seems like there is something
wrong in the Buffalo DHCP client.

--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
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