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List:       openvswitch-discuss
Subject:    [ovs-discuss] Running into MTU problem (2 extra bytes)
From:       jesse () nicira ! com (Jesse Gross)
Date:       2015-06-27 15:11:57
Message-ID: CAEP_g=9nRhKTnwF8BgSDLBD6sNRcEJPbbK0RK++N1k3Z+tjdag () mail ! gmail ! com
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Thanks for the confirmation. I wonder what Debian 8 is doing to screw
things up?

On Friday, June 26, 2015, Johnson L. Wu <johnson at snoopy.org> wrote:

> Not OVS for sure!!
>
> I tried a control experiment:  Debian  7.8, OVS 2.3.3
>
> # cat /etc/debian_version
> 7.8
> root at labeled3sb1:/home/data/pcap/20150626# ovs-vsctl --version
> ovs-vsctl (Open vSwitch) 2.3.3
> Compiled Jun 26 2015 16:52:46
> DB Schema 7.6.2
> root at labeled3sb1:/home/data/pcap/20150626# uname -r
> 3.2.0-4-amd64
> root at labeled3sb1:/home/data/pcap/20150626#
>
> ifconfig | grep MTU shows all 1500
> No errors in dmesg at all.
>
> The VM behind the OVS is happy as a clam, no timeouts no need for MTU
> adjustments.
>
> Sorry for the trouble and thanks for all the help Jesse.
>
> Emil I think it may be prudent to reinstall on a 7.8 and not let apt-get
> upgrade or update get in the way and see.
>
> Cheers,
>
> -Johnson
>
> -----Original Message-----
> From: Jesse Gross [mailto:jesse at nicira.com <javascript:;>]
> Sent: Thursday, June 25, 2015 4:18 PM
> To: Johnson L. Wu
> Cc: Emil Flink; discuss at openvswitch.org <javascript:;>
> Subject: Re: [ovs-discuss] Running into MTU problem (2 extra bytes)
>
> On Wed, Jun 24, 2015 at 7:37 PM, Johnson L. Wu <johnson at snoopy.org
> <javascript:;>> wrote:
> > Tried configuring 2.4 by hand
> >
> > root at jwu-lenovo:/usr/local/src/trunk/ShadowBox/Deploy/apps# ovs-vsctl
> > --version ovs-vsctl (Open vSwitch) 2.4.90 Compiled Jun 24 2015
> > 19:16:45 DB Schema 7.12.1
> > root at jwu-lenovo:/usr/local/src/trunk/ShadowBox/Deploy/apps# uname -r
> > 3.16.0-4-amd64
> > root at jwu-lenovo:/usr/local/src/trunk/ShadowBox/Deploy/apps#
> >
> >
> > ./configure --prefix=/usr --localstatedir=/var
> > --with-linux=/lib/modules/`uname -r`/build  make; make install;  make
> > modules_install; sudo depmod -a
> >
> > and its still the same, 2 bytes off.
> >
> > Will update if I see anything else.  Thanks!
>
> OK, thanks. I guess it seems somewhat unlikely to be related to OVS at
> this point, although I don't have a good theory as to what would cause
> this. Let us know if you find anything more.
>
>
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