CFR: bridge locking

[Julian Elischer]

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 at fledge.watson.org      Network Associates Laboratories
> >>
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> >>
> > 
> > 
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> 
> -- 
> Daniel C. Sobral                   (8-DCS)
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>