Hello All, a question: i have a setup where an mpls P router sends via GRE SDP (service delivery path) traffic to an openbsd machine, acting as a PE, i need to have my traffic decapsulated to the original payload (minus gre, minus mpls headers) however i have difficulties getting proper payload after a gre interface.
following interfaces are configured. original ip addresses are replaced with A and B. vic1: flags=88843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,MPLS> mtu 1530 lladdr 00:50:56:01:00:9e priority: 0 media: Ethernet autoselect status: active inet ___A___ netmask 0xfffffff8 broadcast __C__ gre0: flags=89011<UP,POINTOPOINT,LINK0,MULTICAST,MPLS> mtu 1476 priority: 0 groups: gre physical address inet ___A___--> ___B___ inet ___A___--> ___B___netmask 0xff000000 mpe1: flags=51<UP,POINTOPOINT,RUNNING> mtu 1500 priority: 0 mpls label: 13001 groups: mpe lo1: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 33200 priority: 0 groups: lo inet 192.168.255.1 netmask 0xffffff00 a packet comes in with following stack, as captured on the vic1. there in MPLS header i have expected label 13001 which should be "poped", see attachment, gre-mpls-packet.png, however on the gre0 interface at the same time i see some family 33 header, prepending the payload of original packet starting with the mpls header, see attachment: data-packet.png i run a custom 4.8 kernel on i386 with MP, MPLS and mpe enabled cheers! Vladimir [demime 1.01d removed an attachment of type image/png which had a name of gre-mpls-packet.png] [demime 1.01d removed an attachment of type image/png which had a name of data-packet.png]
