Date: Mon, 27 Apr 2015 15:33:55 +0600 From: Victor Sudakov <vas@mpeks.tomsk.su> To: freebsd-questions@freebsd.org Subject: Re: tunneling L2 tagged traffic over IP Message-ID: <20150427093355.GA86151@admin.sibptus.tomsk.ru> In-Reply-To: <20150426123629.GA48916@admin.sibptus.tomsk.ru> References: <20150425174935.GA48023@admin.sibptus.tomsk.ru> <553C1F66.4060901@gmx.com> <20150426123629.GA48916@admin.sibptus.tomsk.ru>
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Victor Sudakov wrote: > Nikos Vassiliadis wrote: > > > > > > Could you advise a solution for tunneling L2 (Ethernet) traffic over IP? > > > > > > There is a solution in bridge(4) using the EtherIP protocol, but it > > > works with untagged frames only. I need to tunnel 802.1q tagged frames > > > as well. > > > > > > Any ideas? > > > > > > > > You can do this with netgraph. Check this post: > > > > http://lists.freebsd.org/pipermail/freebsd-net/2005-October/008861.html > > > > It's a modification of the /usr/share/examples/netgraph/ether.bridge > script. How do you know that it would pass 802.1q tagged frames? It > references a "fxp0" interface which passes untagged traffic unless a > vlan(4) interface is configured on top thereof. The script does not work. It prints error messages like + LINKNUM=1 + ngctl mkpeer bnet0: ksocket link1 inet/dgram/udp + ngctl msg ng0:inet bind inet/10.14.143.136:4028 ngctl: send msg: No such file or directory + ngctl msg ng0:inet connect inet/10.14.140.125:4028 ngctl: send msg: No such file or directory + expr 1 + 1 + LINKNUM=2 and does not generate any traffic. Perhaps it needs some debugging. I am still looking for a solution, thanks in advance to all who has anything to say. In the meanwhile, I have tried bridging ethernet NICs and tap(4), and connected two tap(4) devices with net/vtun. It works, but again, only for untagged frames. -- Victor Sudakov, VAS4-RIPE, VAS47-RIPN sip:sudakov@sibptus.tomsk.ru
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