On Fri, Nov 05, 2010 at 06:22:07PM +0100, Vladimir Ostrovskiy wrote:
> tcpdump -nvi vic1 -X ip proto 47
>
> 18:20:27.697032 gre 10.163.0.8 > 10.163.0.162: [] gre-proto-0x8847 (DF)
(ttl
> 255, id 276, len 130)
> 0000: 4500 0082 0114 4000 ff2f 6449 0aa3 0008 e.....@./dI.#..
> 0010: 0aa3 00a2 0000 8847 032c 91ff 0016 4d40 .#."...G.,...M@
> 0020: 17f3 0050 5601 009e 8100 05e6 0800 4500 .s.PV......f..E.
> 0030: 0054 6891 0000 ff01 3d28 0aa3 00a2 0aa3 .Th....=(.#.".#
> 0040: 0008 0800 17dc c975 0000 4cd4 3cdb 000a .....\Iu..LT<[..
> 0050: a1f1 0809 0a0b 0c0d 0e0f 1011 1213 1415 !q..............
> 0060: 1617 1819 1a1b ......
>
> tcpdump -nvi gre0 -X
>
> 18:20:27.697069 MPLS(label 13001, exp 0, ttl 255)
> 0000: 032c 91ff 0016 4d40 17f3 0050 5601 009e .,....@.s.pv...
> 0010: 8100 05e6 0800 4500 0054 6891 0000 ff01 ...f..E..Th....
> 0020: 3d28 0aa3 00a2 0aa3 0008 0800 17dc c975 =(.#.".#.....\Iu
> 0030: 0000 4cd4 3cdb 000a a1f1 0809 0a0b 0c0d ..LT<[..!q......
> 0040: 0e0f 1011 1213 1415 1617 1819 1a1b 1c1d ................
> 0050: 1e1f 2021 2223 2425 2627 2829 2a2b 2c2d .. !"#$%&'()*+,-
> 0060: 2e2f 3031 3233 3435 3637 ./01234567
>

OK, those packets look like PWE3 encapsulated ethernet frames. mpe(4) only
supports L3 IP/IPv6 traffic for now. So the only way out here is to use a
L3 MPLS VPN.

>
> On Fri, Nov 5, 2010 at 6:13 PM, Stuart Henderson
<s...@spacehopper.org>wrote:
>
> > In gmane.os.openbsd.misc, you wrote:
> > > see pcap's attached,
> > >
> > > On Fri, Nov 5, 2010 at 4:08 PM, Claudio Jeker <cje...@diehard.n-r-g.com
> > >wrote:
> > >
> > >> On Fri, Nov 05, 2010 at 03:43:07PM +0100, Vladimir Ostrovskiy wrote:
> > >> > Hello All,
> > >> >   a question:
> > >>
> > >> Please just include tcpdump -nvi vic1 -X and tcpdump -nvi gre0 -X
> > output.
> > >> Tcpdump is in base for a reason. Include route -n show -mpls as well
> > >> please.
> > >>
> > >> AF 33 is MPLS and gre(4) so that seems to be OK.
> > >> --
> > >> :wq Claudio
> > >
> > > [demime 1.01d removed an attachment of type application/octet-stream
> > which had a name of gre0-capture.pcap]
> > >
> > > [demime 1.01d removed an attachment of type application/octet-stream
> > which had a name of vic1-capture.pcap]
> > >
> > >
> >
> > Just include the output from the commands Claudio showed, pasted into the
> > email body (i.e. in-line text, not as an attachment).
>

--
:wq Claudio

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