here is the lib:
r1#
r1#
r1#show mpls forw
r1#show mpls forw
 |~~~~~~~~|~~~~~~~~~~|~~~~~~~~~~~|~~~~~~~~~|~~~~~~~~~~~~|~~~~~~~~~|~~~~~~~|
 | label  | vrf      | iface     | hop     | label      | targets | bytes |
 |--------|----------|-----------|---------|------------|---------|-------|
 | 68778  | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 128816 | null     | null      | null    | unlabelled |         | 0     |
 | 128817 | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 128818 | v1:6     | ethernet1 | 1234::2 | 6428       |         | 0     |
 | 128819 | v1:6     | ethernet1 | 1234::2 | 6429       |         | 0     |
 | 128820 | v1:6     | ethernet1 | 1234::2 | 6430       |         | 0     |
 | 128821 | null     | null      | null    | unlabelled |         | 0     |
 | 128822 | null     | null      | null    | unlabelled |         | 0     |
 | 128823 | null     | null      | null    | unlabelled |         | 0     |
 | 128824 | null     | null      | null    | unlabelled |         | 0     |
 | 128825 | null     | null      | null    | unlabelled |         | 0     |
 | 264849 | null     | null      | null    | unlabelled |         | 0     |
 | 264850 | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 264851 | v1:4     | ethernet1 | 1.1.1.2 | 947660     |         | 0     |
 | 264852 | v1:4     | ethernet1 | 1.1.1.2 | 947661     |         | 0     |
 | 264853 | v1:4     | ethernet1 | 1.1.1.2 | 947662     |         | 0     |
 | 264854 | null     | null      | null    | unlabelled |         | 0     |
 | 264855 | null     | null      | null    | unlabelled |         | 0     |
 | 264856 | null     | null      | null    | unlabelled |         | 0     |
 | 264857 | null     | null      | null    | unlabelled |         | 0     |
 | 264858 | null     | null      | null    | unlabelled |         | 0     |
 | 646626 | v1:4     | ethernet1 | 1.1.1.2 | 3          |         | 0     |
 | 725117 | v1:6     | ethernet1 | 1234::2 | 3          |         | 0     |
 | 764390 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 841117 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 901916 | v1:6     | null      | null    | unlabelled | local   | 0     |
 |________|__________|___________|_________|____________|_________|_______|
r1#
r1#
here is the lib:
r2#
r2#
r2#show mpls forw
r2#show mpls forw
 |~~~~~~~~~|~~~~~~~~~~|~~~~~~~~~~~|~~~~~~~~~|~~~~~~~~~~~~|~~~~~~~~~|~~~~~~~|
 | label   | vrf      | iface     | hop     | label      | targets | bytes |
 |---------|----------|-----------|---------|------------|---------|-------|
 | 1233    | v1:4     | ethernet1 | 1.1.1.1 | 3          |         | 0     |
 | 6426    | null     | null      | null    | unlabelled |         | 0     |
 | 6427    | v1:6     | ethernet1 | 1234::1 | 128817     |         | 1280  |
 | 6428    | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 6429    | v1:6     | ethernet2 | 1235::3 | 494917     |         | 640   |
 | 6430    | v1:6     | ethernet2 | 1235::3 | 494918     |         | 640   |
 | 6431    | null     | null      | null    | unlabelled |         | 0     |
 | 6432    | null     | null      | null    | unlabelled |         | 0     |
 | 6433    | null     | null      | null    | unlabelled |         | 0     |
 | 6434    | null     | null      | null    | unlabelled |         | 0     |
 | 6435    | null     | null      | null    | unlabelled |         | 0     |
 | 226752  | v1:4     | ethernet2 | 1.1.2.3 | 3          |         | 0     |
 | 344477  | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 599543  | v1:6     | ethernet1 | 1234::1 | 3          |         | 0     |
 | 615152  | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 678062  | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 922803  | v1:6     | ethernet2 | 1235::3 | 3          |         | 0     |
 | 947658  | null     | null      | null    | unlabelled |         | 0     |
 | 947659  | v1:4     | ethernet1 | 1.1.1.1 | 264850     |         | 1280  |
 | 947660  | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 947661  | v1:4     | ethernet2 | 1.1.2.3 | 291229     |         | 640   |
 | 947662  | v1:4     | ethernet2 | 1.1.2.3 | 291230     |         | 640   |
 | 947663  | null     | null      | null    | unlabelled |         | 0     |
 | 947664  | null     | null      | null    | unlabelled |         | 0     |
 | 947665  | null     | null      | null    | unlabelled |         | 0     |
 | 947666  | null     | null      | null    | unlabelled |         | 0     |
 | 947667  | null     | null      | null    | unlabelled |         | 0     |
 | 1032017 | tester:6 | null      | null    | unlabelled | local   | 0     |
 |_________|__________|___________|_________|____________|_________|_______|
r2#
r2#
here is the lib:
r3#
r3#
r3#show mpls forw
r3#show mpls forw
 |~~~~~~~~|~~~~~~~~~~|~~~~~~~~~~~|~~~~~~~~~|~~~~~~~~~~~~|~~~~~~~~~|~~~~~~~|
 | label  | vrf      | iface     | hop     | label      | targets | bytes |
 |--------|----------|-----------|---------|------------|---------|-------|
 | 23243  | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 45137  | v1:4     | ethernet2 | 1.1.3.4 | 3          |         | 0     |
 | 291226 | null     | null      | null    | unlabelled |         | 0     |
 | 291227 | v1:4     | ethernet1 | 1.1.2.2 | 947659     |         | 640   |
 | 291228 | v1:4     | ethernet1 | 1.1.2.2 | 947660     |         | 640   |
 | 291229 | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 291230 | v1:4     | ethernet2 | 1.1.3.4 | 98167      |         | 1280  |
 | 291231 | null     | null      | null    | unlabelled |         | 0     |
 | 291232 | null     | null      | null    | unlabelled |         | 0     |
 | 291233 | null     | null      | null    | unlabelled |         | 0     |
 | 291234 | null     | null      | null    | unlabelled |         | 0     |
 | 291235 | null     | null      | null    | unlabelled |         | 0     |
 | 417857 | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 494914 | null     | null      | null    | unlabelled |         | 0     |
 | 494915 | v1:6     | ethernet1 | 1235::2 | 6427       |         | 640   |
 | 494916 | v1:6     | ethernet1 | 1235::2 | 6428       |         | 640   |
 | 494917 | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 494918 | v1:6     | ethernet2 | 1236::4 | 1045814    |         | 1280  |
 | 494919 | null     | null      | null    | unlabelled |         | 0     |
 | 494920 | null     | null      | null    | unlabelled |         | 0     |
 | 494921 | null     | null      | null    | unlabelled |         | 0     |
 | 494922 | null     | null      | null    | unlabelled |         | 0     |
 | 494923 | null     | null      | null    | unlabelled |         | 0     |
 | 660148 | v1:4     | ethernet1 | 1.1.2.2 | 3          |         | 0     |
 | 680871 | v1:6     | ethernet2 | 1236::4 | 3          |         | 0     |
 | 751361 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 815957 | v1:6     | ethernet1 | 1235::2 | 3          |         | 0     |
 | 861561 | v1:4     | null      | null    | unlabelled | local   | 0     |
 |________|__________|___________|_________|____________|_________|_______|
r3#
r3#
here is the lib:
r4#
r4#
r4#show mpls forw
r4#show mpls forw
 |~~~~~~~~~|~~~~~~~~~~|~~~~~~~~~~~|~~~~~~~~~|~~~~~~~~~~~~|~~~~~~~~~|~~~~~~~|
 | label   | vrf      | iface     | hop     | label      | targets | bytes |
 |---------|----------|-----------|---------|------------|---------|-------|
 | 50299   | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 98163   | null     | null      | null    | unlabelled |         | 0     |
 | 98164   | v1:4     | ethernet1 | 1.1.3.3 | 291227     |         | 0     |
 | 98165   | v1:4     | ethernet1 | 1.1.3.3 | 291228     |         | 0     |
 | 98166   | v1:4     | ethernet1 | 1.1.3.3 | 291229     |         | 0     |
 | 98167   | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 98168   | null     | null      | null    | unlabelled |         | 0     |
 | 98169   | null     | null      | null    | unlabelled |         | 0     |
 | 98170   | null     | null      | null    | unlabelled |         | 0     |
 | 98171   | null     | null      | null    | unlabelled |         | 0     |
 | 98172   | null     | null      | null    | unlabelled |         | 0     |
 | 184454  | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 209659  | v1:4     | ethernet1 | 1.1.3.3 | 3          |         | 0     |
 | 399599  | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 673650  | v1:6     | ethernet1 | 1236::3 | 3          |         | 0     |
 | 786023  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 1045810 | null     | null      | null    | unlabelled |         | 0     |
 | 1045811 | v1:6     | ethernet1 | 1236::3 | 494915     |         | 0     |
 | 1045812 | v1:6     | ethernet1 | 1236::3 | 494916     |         | 0     |
 | 1045813 | v1:6     | ethernet1 | 1236::3 | 494917     |         | 0     |
 | 1045814 | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 1045815 | null     | null      | null    | unlabelled |         | 0     |
 | 1045816 | null     | null      | null    | unlabelled |         | 0     |
 | 1045817 | null     | null      | null    | unlabelled |         | 0     |
 | 1045818 | null     | null      | null    | unlabelled |         | 0     |
 | 1045819 | null     | null      | null    | unlabelled |         | 0     |
 |_________|__________|___________|_________|____________|_________|_______|
r4#
r4#