Subject: Re: can't raise in kernel pppoe0 with mtu > 1460
To: Carl Brewer <>
From: Martin Husemann <>
List: port-i386
Date: 03/22/2005 09:08:05
On Tue, Mar 22, 2005 at 06:59:07PM +1100, Carl Brewer wrote:
> Is there some reason why you're blocking the ICMP

> type 3 code 4 packets?  See :

I might have missed something, was there evidence that *he* is doing that?

Somthing (the d-link gadget?) might do that, which would cause the need
for mss clamping - but the common scenario where you run into this problems
is that this bogus filtering happens beyound your controll.

Ever tried to get VeriSign to change their firewall setup?
Or a customer (where you are forced to establish working communication) with
a completely clueeless network admin (that you are not in a position to get
fired)? Or an ISP with "transparent" (forced) proxy?