How would an untagged ethernet subinterface behave? What packets would it 
receive and where would its packets be sent? How would that differ from the 
parent interface?

If you’re looking for more linux-like behavior, where you can create logical 
aliases of an interface in effect to administratively group a set of addresses, 
we don’t do that. If you want multiple addresses per interface, just add them 
to the interface. Let your controller worry about what they logically mean.

Chris.

From: vpp-dev-boun...@lists.fd.io [mailto:vpp-dev-boun...@lists.fd.io] On 
Behalf Of Nagaprabhanjan Bellaru
Sent: Monday, November 14, 2016 6:27 AM
To: vpp-dev <vpp-dev@lists.fd.io>
Subject: Re: [vpp-dev] Creating an untagged sub interface gives "vlan is 
already in use"

Is my understanding correct? Or is this a bug?
-nagp

On Wed, Oct 26, 2016 at 3:48 PM, Nagaprabhanjan Bellaru 
<nagp.li...@gmail.com<mailto:nagp.li...@gmail.com>> wrote:
Is this expected behavior?

DBGvpp# show interface
      Name               Idx       State          Counter          Count
local0                        0        down
eth-1                         1         up
eth-2                         2         up
eth-3                         3         up
DBGvpp# create sub-interfaces eth-1 1 untagged
create sub-interfaces: vlan is already in use
Thanks,
-nagp

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