FreeBSD router problems

Barney Cordoba barney_cordoba at
Mon Jul 15 15:06:34 UTC 2013

On Sun, 7/14/13, Eugene Grosbein <eugen at> wrote:

 Subject: Re: FreeBSD router problems
 To: "Barney Cordoba" <barney_cordoba at>
 Cc: freebsd-net at, "isp" <mline at>
 Date: Sunday, July 14, 2013, 1:17 PM
 On 14.07.2013 23:14, Barney Cordoba
 > So why not get a real 10gb/s card? RJ45 10gig is here,
 > and it works a lot better than LAGG.
 > If you want to get more than 1Gb/s on a single
 > you'd need to use roundrobin, which will alternate
 > without concern for ordering. Purists will argue
 against it,
 > but it does work and modern TCP stacks know how to deal
 > with out of order packets.
 Except of FreeBSD's packet reassembly is broken for long
 For example,
Also, IP fragmentation and TCP segments are not the same thing. TCP
segments regularly will come in out of order, NFS is too stupid to do
things correctly; IP fragmentation should not be done unless necessary
to accommodate a smaller mtu.


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