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Date:	Tue, 02 Jun 2015 09:15:04 -0700
From:	roopa <roopa@...ulusnetworks.com>
To:	Robert Shearman <rshearma@...cade.com>
CC:	netdev@...r.kernel.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Thomas Graf <tgraf@...g.ch>,
	Dinesh Dutt <ddutt@...ulusnetworks.com>,
	Vivek Venkatraman <vivek@...ulusnetworks.com>
Subject: Re: [RFC net-next 3/3] mpls: new ipmpls device for encapsulating
 IP packets as mpls

On 6/1/15, 9:46 AM, Robert Shearman wrote:
> Allow creating an mpls device for the purposes of encapsulating IP
> packets with:
>
>    ip link add type ipmpls
>
> This device defines its per-nexthop encapsulation data as a stack of
> labels, in the same format as for RTA_NEWST. It uses the encap data
> which will have been stored in the IP route to encapsulate the packet
> with that stack of labels, with the last label corresponding to a
> local label that defines how the packet will be sent out. The device
> sends packets over loopback to the local MPLS forwarding logic which
> performs all of the work.
>
>
Maybe a silly question, but when you loop the packet back, what does the 
local MPLS forwarding logic
lookup with ? It probably assumes there is a mpls route with that label 
and nexthop.
Will this need any internal labels (thinking same label stack different 
tunnel device etc) ?
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