here is the lib:
r1#
r1#
r1#show mpls forw
r1#show mpls forw
 |~~~~~~~~|~~~~~~~~~~|~~~~~~~~~~~|~~~~~~~~~|~~~~~~~~~~~~|~~~~~~~~~|~~~~~~~|
 | label  | vrf      | iface     | hop     | label      | targets | bytes |
 |--------|----------|-----------|---------|------------|---------|-------|
 | 35083  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 210722 | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 402122 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 584183 | v1:6     | ethernet1 | 1234::2 | 3          |         | 0     |
 | 706843 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 728706 | null     | null      | null    | unlabelled |         | 0     |
 | 728707 | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 728708 | v1:6     | ethernet1 | 1234::2 | 117682     |         | 0     |
 | 728709 | v1:6     | ethernet1 | 1234::2 | 117683     |         | 0     |
 | 728710 | v1:6     | ethernet1 | 1234::2 | 117684     |         | 0     |
 | 728711 | null     | null      | null    | unlabelled |         | 0     |
 | 728712 | null     | null      | null    | unlabelled |         | 0     |
 | 728713 | null     | null      | null    | unlabelled |         | 0     |
 | 728714 | null     | null      | null    | unlabelled |         | 0     |
 | 728715 | null     | null      | null    | unlabelled |         | 0     |
 | 764139 | null     | null      | null    | unlabelled |         | 0     |
 | 764140 | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 764141 | v1:4     | ethernet1 | 1.1.1.2 | 23475      |         | 0     |
 | 764142 | v1:4     | ethernet1 | 1.1.1.2 | 23476      |         | 0     |
 | 764143 | v1:4     | ethernet1 | 1.1.1.2 | 23477      |         | 0     |
 | 764144 | null     | null      | null    | unlabelled |         | 0     |
 | 764145 | null     | null      | null    | unlabelled |         | 0     |
 | 764146 | null     | null      | null    | unlabelled |         | 0     |
 | 764147 | null     | null      | null    | unlabelled |         | 0     |
 | 764148 | null     | null      | null    | unlabelled |         | 0     |
 | 922347 | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 937347 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 971130 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 972798 | v1:4     | ethernet1 | 1.1.1.2 | 3          |         | 0     |
 | 991081 | tester: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 |
 |---------|----------|-----------|---------|------------|---------|-------|
 | 4118    | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 14133   | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 22612   | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 23473   | null     | null      | null    | unlabelled |         | 0     |
 | 23474   | v1:4     | ethernet1 | 1.1.1.1 | 764140     |         | 1280  |
 | 23475   | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 23476   | v1:4     | ethernet2 | 1.1.2.3 | 806358     |         | 640   |
 | 23477   | v1:4     | ethernet2 | 1.1.2.3 | 806359     |         | 640   |
 | 23478   | null     | null      | null    | unlabelled |         | 0     |
 | 23479   | null     | null      | null    | unlabelled |         | 0     |
 | 23480   | null     | null      | null    | unlabelled |         | 0     |
 | 23481   | null     | null      | null    | unlabelled |         | 0     |
 | 23482   | null     | null      | null    | unlabelled |         | 0     |
 | 117680  | null     | null      | null    | unlabelled |         | 0     |
 | 117681  | v1:6     | ethernet1 | 1234::1 | 728707     |         | 1280  |
 | 117682  | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 117683  | v1:6     | ethernet2 | 1235::3 | 675161     |         | 640   |
 | 117684  | v1:6     | ethernet2 | 1235::3 | 675162     |         | 640   |
 | 117685  | null     | null      | null    | unlabelled |         | 0     |
 | 117686  | null     | null      | null    | unlabelled |         | 0     |
 | 117687  | null     | null      | null    | unlabelled |         | 0     |
 | 117688  | null     | null      | null    | unlabelled |         | 0     |
 | 117689  | null     | null      | null    | unlabelled |         | 0     |
 | 220369  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 275594  | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 395004  | v1:4     | ethernet2 | 1.1.2.3 | 3          |         | 0     |
 | 618048  | v1:6     | ethernet1 | 1234::1 | 3          |         | 0     |
 | 680766  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 731417  | v1:4     | ethernet1 | 1.1.1.1 | 3          |         | 0     |
 | 883811  | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 943642  | v1:6     | ethernet2 | 1235::3 | 3          |         | 0     |
 | 1041751 | tester:4 | 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 |
 |--------|----------|-----------|---------|------------|---------|-------|
 | 15581  | v1:6     | ethernet2 | 1236::4 | 3          |         | 0     |
 | 80961  | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 136693 | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 216464 | v1:4     | ethernet2 | 1.1.3.4 | 3          |         | 0     |
 | 273746 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 306643 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 433200 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 483665 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 554661 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 647839 | v1:4     | ethernet1 | 1.1.2.2 | 3          |         | 0     |
 | 675158 | null     | null      | null    | unlabelled |         | 0     |
 | 675159 | v1:6     | ethernet1 | 1235::2 | 117681     |         | 640   |
 | 675160 | v1:6     | ethernet1 | 1235::2 | 117682     |         | 640   |
 | 675161 | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 675162 | v1:6     | ethernet2 | 1236::4 | 147220     |         | 1280  |
 | 675163 | null     | null      | null    | unlabelled |         | 0     |
 | 675164 | null     | null      | null    | unlabelled |         | 0     |
 | 675165 | null     | null      | null    | unlabelled |         | 0     |
 | 675166 | null     | null      | null    | unlabelled |         | 0     |
 | 675167 | null     | null      | null    | unlabelled |         | 0     |
 | 771209 | v1:6     | ethernet1 | 1235::2 | 3          |         | 0     |
 | 775137 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 806355 | null     | null      | null    | unlabelled |         | 0     |
 | 806356 | v1:4     | ethernet1 | 1.1.2.2 | 23474      |         | 640   |
 | 806357 | v1:4     | ethernet1 | 1.1.2.2 | 23475      |         | 640   |
 | 806358 | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 806359 | v1:4     | ethernet2 | 1.1.3.4 | 542378     |         | 1280  |
 | 806360 | null     | null      | null    | unlabelled |         | 0     |
 | 806361 | null     | null      | null    | unlabelled |         | 0     |
 | 806362 | null     | null      | null    | unlabelled |         | 0     |
 | 806363 | null     | null      | null    | unlabelled |         | 0     |
 | 806364 | null     | null      | null    | unlabelled |         | 0     |
 |________|__________|___________|_________|____________|_________|_______|
r3#
r3#
here is the lib:
r4#
r4#
r4#show mpls forw
r4#show mpls forw
 |~~~~~~~~|~~~~~~~~~~|~~~~~~~~~~~|~~~~~~~~~|~~~~~~~~~~~~|~~~~~~~~~|~~~~~~~|
 | label  | vrf      | iface     | hop     | label      | targets | bytes |
 |--------|----------|-----------|---------|------------|---------|-------|
 | 147216 | null     | null      | null    | unlabelled |         | 0     |
 | 147217 | v1:6     | ethernet1 | 1236::3 | 675159     |         | 0     |
 | 147218 | v1:6     | ethernet1 | 1236::3 | 675160     |         | 0     |
 | 147219 | v1:6     | ethernet1 | 1236::3 | 675161     |         | 0     |
 | 147220 | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 147221 | null     | null      | null    | unlabelled |         | 0     |
 | 147222 | null     | null      | null    | unlabelled |         | 0     |
 | 147223 | null     | null      | null    | unlabelled |         | 0     |
 | 147224 | null     | null      | null    | unlabelled |         | 0     |
 | 147225 | null     | null      | null    | unlabelled |         | 0     |
 | 150181 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 169056 | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 196833 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 401364 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 414040 | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 424070 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 525576 | v1:4     | ethernet1 | 1.1.3.3 | 3          |         | 0     |
 | 542374 | null     | null      | null    | unlabelled |         | 0     |
 | 542375 | v1:4     | ethernet1 | 1.1.3.3 | 806356     |         | 0     |
 | 542376 | v1:4     | ethernet1 | 1.1.3.3 | 806357     |         | 0     |
 | 542377 | v1:4     | ethernet1 | 1.1.3.3 | 806358     |         | 0     |
 | 542378 | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 542379 | null     | null      | null    | unlabelled |         | 0     |
 | 542380 | null     | null      | null    | unlabelled |         | 0     |
 | 542381 | null     | null      | null    | unlabelled |         | 0     |
 | 542382 | null     | null      | null    | unlabelled |         | 0     |
 | 542383 | null     | null      | null    | unlabelled |         | 0     |
 | 575016 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 839455 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 935587 | v1:6     | ethernet1 | 1236::3 | 3          |         | 0     |
 |________|__________|___________|_________|____________|_________|_______|
r4#
r4#