Re: [RFC net-next 3/3] mpls: new ipmpls device for encapsulating IP packets as mpls

roopa
2015-06-02T16:15:08Z

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) ?