As a note - the bridging/tunneling is working perfectly once I force it
to use a bogus IP range that starts with an even number, but
unfortunately, that's not going to work so good given that our primary
address space is 131.151.x.x. 

Any ideas on what is up with the even/odd error?

-- Nathan

------------------------------------------------------------
Nathan Neulinger                       nneul@mst.edu
Missouri S&T Information Technology    (573) 612-1412
System Administrator - Principal       KD0DMH

-----Original Message-----
From: Neulinger, Nathan
Sent: Thursday, October 29, 2009 3:22 PM
To: 'Stephen Hemminger'
Cc: netdev@vger.kernel.org
Subject: RE: How to use gretap with bridge?

I was referring to the local IP in the "ip link add ... remote x.z.z.z
local y.z.z.z" command specifying the endpoints of the tunnel. It lets
it be added to the bridge if y is even, but not if y is odd. Why

should

it care what the IP of the tunnel endpoints are?

-- Nathan

------------------------------------------------------------
Nathan Neulinger                       nneul@mst.edu
Missouri S&T Information Technology    (573) 612-1412
System Administrator - Principal       KD0DMH

quoted

-----Original Message-----
From: Stephen Hemminger [mailto:shemminger@vyatta.com]
Sent: Thursday, October 29, 2009 3:01 PM
To: Neulinger, Nathan
Cc: netdev@vger.kernel.org
Subject: Re: How to use gretap with bridge?

On Thu, 29 Oct 2009 14:01:31 -0500
"Neulinger, Nathan" [off-list ref] wrote:

quoted

Further testing - if the leading octet of the 'local' address is

even,

quoted

it allows it to be added to bridge, if it's odd, it won't.

Any ideas?

If leading octet of MAC address is odd, then bridge thinks it
is not a valid ethernet for bridging because it is a multicast
address.


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