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RE: [Xen-devel] networking oddities, present status ? changeset: 7145:71466686d026

  • To: "Andrew Theurer" <habanero@xxxxxxxxxx>
  • From: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
  • Date: Sat, 1 Oct 2005 11:17:19 +0100
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Sat, 01 Oct 2005 10:14:55 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcXGDtxZX2hcz1yzSXaiVzlR09S/cgAYbfHg
  • Thread-topic: [Xen-devel] networking oddities, present status ? changeset: 7145:71466686d026

> I give that a shot.  I have a feeling at least one of the 
> three switches I have in my network may have STP on, and I 
> guess I should check the xen hosts as well (they really 
> should all be using the same network-bridge script).  If STP 
> is off everywhere, is there any reason to not use 
> fe:ff:ff:ff:ff:ff on all xen-br0 devices?

I don't believe so.

However, I just ran tcpdump on my network and saw an occasional packet
with that src address come out from a non-Xen host (to the UDP discard
port -- no idea what this is), which causes all the Xen hosts to grumble
about someone else using their addr.

I'm not entirely sure why we started using the broadcast mac addr for
these. Although they don't need to be different, I wander if we should
be using an a more normal looking address.


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