bin/103762: some tun interfaces with a mtu of 1500 while i should never exceed 1472 with ppp

[Dominic Blais]

The following reply was made to PR bin/103762; it has been noted by GNATS.

From: "Dominic Blais" <dblais at interplex.ca>
To: bug-followup at FreeBSD.org,
 dblais at interplex.ca
Cc:  
Subject: Re: bin/103762: some tun interfaces with a mtu of 1500 while i 
     should never exceed 1472 with ppp
Date: Tue, 3 Oct 2006 14:30:42 -0400 (EDT)

 I got some new informations about this problem. We noticed that it was
 triggered by 3 specific customers which all had Linksys BEFSR41 routers.
 It seems that forcing an mtu of 1472 on it fix the problem. So maybe
 there's a problem with mtu size negotiation with this router? It would be
 nice to fix the FreeBSD side of this in order to cope with these router
 models... I don't know what's wrong exactly but try with this kind of
 router, hardware version 4.0 and it should do the same thing after some
 hours.
 
 --
 Dominic Blais