Skip site navigation (1)Skip section navigation (2)
Date:      Tue, 7 Sep 2004 13:13:40 -0400
From:      Charles Swiger <cswiger@mac.com>
To:        "R. W." <list-freebsd-2004@morbius.sent.com>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: MTU Blackhole problem?
Message-ID:  <435CA6EA-00F1-11D9-A3E8-003065ABFD92@mac.com>
In-Reply-To: <200409071246.38674.list-freebsd-2004@morbius.sent.com>
References:  <200409071246.38674.list-freebsd-2004@morbius.sent.com>

next in thread | previous in thread | raw e-mail | index | archive | help
On Sep 7, 2004, at 7:46 AM, R. W. wrote:
> I'm guessing that this is a path MTU discovery blackhole, since if I 
> set
> sysctl  net.inet.tcp.sendspace=400  the problem goes away. (I presume
> that net.inet.tcp.path_mtu_discovery: 1  means that path MTU discovery
> is already turned-on by default.)
>
> What the correct way to deal with this? Should I just play around with
> net.inet.tcp.sendspace?

Try "ifconfig en0 mtu 512"; replace en0 with the name of your NIC.

[ Try different MTUs, too. ]

-- 
-Chuck



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?435CA6EA-00F1-11D9-A3E8-003065ABFD92>