Re: CFR: bridge locking

From: Julian Elischer (julian_at_elischer.org)
Date: 08/20/03

  • Next message: Daniel C. Sobral: "Re: CFR: bridge locking" 
    Date: Wed, 20 Aug 2003 12:55:41 -0700 (PDT)
To: "Daniel C. Sobral" <dcs@tcoip.com.br>

    On Wed, 20 Aug 2003, Daniel C. Sobral wrote:

    > Julian Elischer wrote:
    > >
    > > On Wed, 20 Aug 2003, Robert Watson wrote:
    > >
    > >
    > >>On Wed, 20 Aug 2003, Lars Eggert wrote:
    > >>
    > >>
    > >>>I think you mentioned in the past that NetBSD (OpenBSD?) has bridge code
    > >>>that implements the pseudo-device approach?
    > >
    > >
    > > FreeBSD has both.
    > > If you use netgraph bridging then you are using a more
    > > "link level device" like approach.
    >
    > Nope. Neither netgraph nor bridge(4) produce a pseudo-interface.
    > Unfortunately. It would have solved the problem I was discussing with
    > you (alas, I found a y2k thread, in which Archie and you were also
    > present, about that very same problem).
    >
    > Netgraph's ng_iface is not enough, because it's much more limitted.

    netgraph's eiface node may do better..

    >
    > >
    > >
    > >
    > >>I had an older set of patches (4.x?) that implemented a bridgeX interface
    > >>that saw all of the packets bridged by the bridge. However, it was just a
    > >>pseudo-interface for the purposes of BPF -- it didn't carry a link local
    > >>address, etc. I never tested for interop with IPv6. You can find a very
    > >>old version of this at www.watson.org/~robert/freebsd/bridge.patch. It
    > >>required some cleanup of the interactions between the bridge code and IPFW
    > >>code that have probably since happened in the main tree as well, so the
    > >>chances of this applying or working are effectively 0. :-)
    > >>
    > >>Robert N M Watson FreeBSD Core Team, TrustedBSD Projects
    > >>robert@fledge.watson.org Network Associates Laboratories
    > >>
    > >>_______________________________________________
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    > >>http://lists.freebsd.org/mailman/listinfo/freebsd-net
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    > >>
    > >
    > >
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    >
    >
    > --
    > Daniel C. Sobral (8-DCS)
    > Gerencia de Operacoes
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    > Fones: 55-61-313-7654/Cel: 55-61-9618-0904
    > E-mail: Daniel.Capo@tco.net.br
    > Daniel.Sobral@tcoip.com.br
    > dcs@tcoip.com.br
    >
    > Outros:
    > dcs@newsguy.com
    > dcs@freebsd.org
    > capo@notorious.bsdconspiracy.net
    >
    > The penalty for laughing in a courtroom is six months in jail; if it
    > were not for this penalty, the jury would never hear the evidence.
    > -- H. L. Mencken
    >
    >

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