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Date:      Fri, 23 Apr 2021 05:57:11 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 247912] [if_bridge] IPv6 ndp does not work across local bridge members
Message-ID:  <bug-247912-7501-JfeJQiNOux@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-247912-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-247912-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D247912

--- Comment #19 from Martin Birgmeier <d8zNeCFG@aon.at> ---
I'd like to come back to this issue.

Basically, I am (still :-)) not assigning the IP addresses to the bridge
interface. The major reason for this is that I am assembling/disassembling =
the
bridge and its member interfaces as needed, and I do not want to always hav=
e to
fiddle with reassigning IP addresses from the member interfaces to the brid=
ge
and vice versa.

Which brings me to my point: In normal networking parlance a bridge knows
nothing about ISO layer 3 and therefore not about IP. Much less it gets an =
IP
address assigned (let us not digress to smart managed devices). So I believe
that we have a design issue here: In FreeBSD we are talking about a "bridge"
but in reality it is kludge used to tie some interfaces together. Or at lea=
st
it is not a bridge in the traditional networking sense.

How difficult would it be to redesign the bridge abstraction in FreeBSD to =
more
closely resemble a real layer 2 bridge?

-- Martin

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