description tunnel interface with mpls

addrouter r1
int eth1 eth 0000.0000.1111 $1a$ $1b$
!
vrf def v1
 rd 1:1
 label-mode per-prefix
 exit
int lo0
 vrf for v1
 ipv4 addr 2.2.2.1 255.255.255.255
 ipv6 addr 4321::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.1 255.255.255.0
 ipv6 addr 1234::1 ffff::
 mpls enable
 mpls ldp4
 mpls ldp6
 exit
ipv4 route v1 2.2.2.2 255.255.255.255 1.1.1.2
ipv6 route v1 4321::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 1234::2
int tun1
 tun vrf v1
 tun sou lo0
 tun dest 2.2.2.2
 tun key 1234
 tun mod pweompls
 vrf for v1
 ipv4 addr 3.3.3.1 255.255.255.0
 ipv6 addr 3333::1 ffff::
 exit
!

addrouter r2
int eth1 eth 0000.0000.2222 $1b$ $1a$
!
vrf def v1
 rd 1:1
 label-mode per-prefix
 exit
int lo0
 vrf for v1
 ipv4 addr 2.2.2.2 255.255.255.255
 ipv6 addr 4321::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.2 255.255.255.0
 ipv6 addr 1234::2 ffff:ffff::
 mpls enable
 mpls ldp4
 mpls ldp6
 exit
ipv4 route v1 2.2.2.1 255.255.255.255 1.1.1.1
ipv6 route v1 4321::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 1234::1
int tun1
 tun vrf v1
 tun sou lo0
 tun dest 2.2.2.1
 tun key 1234
 tun mod pweompls
 vrf for v1
 ipv4 addr 3.3.3.2 255.255.255.0
 ipv6 addr 3333::2 ffff::
 exit
!



r1 tping 100 30 2.2.2.2 vrf v1 sou lo0
r2 tping 100 30 2.2.2.1 vrf v1 sou lo0

r1 tping 100 30 3.3.3.2 vrf v1
r1 tping 100 30 3333::2 vrf v1
r2 tping 100 30 3.3.3.1 vrf v1
r2 tping 100 30 3333::1 vrf v1