here is the lib:
r1#
r1#
r1#show mpls forw
r1#show mpls forw
 |~~~~~~~~|~~~~~~~~~~|~~~~~~~~~~~|~~~~~~~~~|~~~~~~~~~~~~|~~~~~~~~~|~~~~~~~|
 | label  | vrf      | iface     | hop     | label      | targets | bytes |
 |--------|----------|-----------|---------|------------|---------|-------|
 | 29397  | null     | null      | null    | unlabelled |         | 0     |
 | 29398  | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 29399  | v1:4     | ethernet1 | 1.1.1.2 | 885717     |         | 0     |
 | 29400  | v1:4     | ethernet1 | 1.1.1.2 | 885718     |         | 0     |
 | 29401  | v1:4     | ethernet1 | 1.1.1.2 | 885719     |         | 0     |
 | 29402  | null     | null      | null    | unlabelled |         | 0     |
 | 29403  | null     | null      | null    | unlabelled |         | 0     |
 | 29404  | null     | null      | null    | unlabelled |         | 0     |
 | 29405  | null     | null      | null    | unlabelled |         | 0     |
 | 29406  | null     | null      | null    | unlabelled |         | 0     |
 | 98357  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 104782 | null     | null      | null    | unlabelled |         | 0     |
 | 104783 | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 104784 | v1:6     | ethernet1 | 1234::2 | 630752     |         | 0     |
 | 104785 | v1:6     | ethernet1 | 1234::2 | 630753     |         | 0     |
 | 104786 | v1:6     | ethernet1 | 1234::2 | 630754     |         | 0     |
 | 104787 | null     | null      | null    | unlabelled |         | 0     |
 | 104788 | null     | null      | null    | unlabelled |         | 0     |
 | 104789 | null     | null      | null    | unlabelled |         | 0     |
 | 104790 | null     | null      | null    | unlabelled |         | 0     |
 | 104791 | null     | null      | null    | unlabelled |         | 0     |
 | 180053 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 464317 | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 558984 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 668220 | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 673152 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 686360 | v1:6     | ethernet1 | 1234::2 | 3          |         | 0     |
 | 710110 | v1:4     | ethernet1 | 1.1.1.2 | 3          |         | 0     |
 | 765949 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 904761 | tester:4 | 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 |
 |---------|----------|-----------|---------|------------|---------|-------|
 | 51105   | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 308091  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 317743  | v1:6     | ethernet2 | 1235::3 | 3          |         | 0     |
 | 353524  | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 369782  | v1:4     | ethernet1 | 1.1.1.1 | 3          |         | 0     |
 | 564566  | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 630750  | null     | null      | null    | unlabelled |         | 0     |
 | 630751  | v1:6     | ethernet1 | 1234::1 | 104783     |         | 1280  |
 | 630752  | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 630753  | v1:6     | ethernet2 | 1235::3 | 251948     |         | 640   |
 | 630754  | v1:6     | ethernet2 | 1235::3 | 251949     |         | 640   |
 | 630755  | null     | null      | null    | unlabelled |         | 0     |
 | 630756  | null     | null      | null    | unlabelled |         | 0     |
 | 630757  | null     | null      | null    | unlabelled |         | 0     |
 | 630758  | null     | null      | null    | unlabelled |         | 0     |
 | 630759  | null     | null      | null    | unlabelled |         | 0     |
 | 656899  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 676956  | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 810278  | v1:4     | ethernet2 | 1.1.2.3 | 3          |         | 0     |
 | 885715  | null     | null      | null    | unlabelled |         | 0     |
 | 885716  | v1:4     | ethernet1 | 1.1.1.1 | 29398      |         | 1280  |
 | 885717  | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 885718  | v1:4     | ethernet2 | 1.1.2.3 | 545897     |         | 640   |
 | 885719  | v1:4     | ethernet2 | 1.1.2.3 | 545898     |         | 640   |
 | 885720  | null     | null      | null    | unlabelled |         | 0     |
 | 885721  | null     | null      | null    | unlabelled |         | 0     |
 | 885722  | null     | null      | null    | unlabelled |         | 0     |
 | 885723  | null     | null      | null    | unlabelled |         | 0     |
 | 885724  | null     | null      | null    | unlabelled |         | 0     |
 | 897940  | v1:6     | ethernet1 | 1234::1 | 3          |         | 0     |
 | 919725  | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 1047980 | 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 |
 |--------|----------|-----------|---------|------------|---------|-------|
 | 189265 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 251945 | null     | null      | null    | unlabelled |         | 0     |
 | 251946 | v1:6     | ethernet1 | 1235::2 | 630751     |         | 640   |
 | 251947 | v1:6     | ethernet1 | 1235::2 | 630752     |         | 640   |
 | 251948 | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 251949 | v1:6     | ethernet2 | 1236::4 | 900988     |         | 1280  |
 | 251950 | null     | null      | null    | unlabelled |         | 0     |
 | 251951 | null     | null      | null    | unlabelled |         | 0     |
 | 251952 | null     | null      | null    | unlabelled |         | 0     |
 | 251953 | null     | null      | null    | unlabelled |         | 0     |
 | 251954 | null     | null      | null    | unlabelled |         | 0     |
 | 291263 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 291915 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 342637 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 359046 | v1:6     | ethernet1 | 1235::2 | 3          |         | 0     |
 | 448639 | v1:4     | ethernet1 | 1.1.2.2 | 3          |         | 0     |
 | 465581 | v1:4     | ethernet2 | 1.1.3.4 | 3          |         | 0     |
 | 516563 | v1:6     | ethernet2 | 1236::4 | 3          |         | 0     |
 | 545894 | null     | null      | null    | unlabelled |         | 0     |
 | 545895 | v1:4     | ethernet1 | 1.1.2.2 | 885716     |         | 640   |
 | 545896 | v1:4     | ethernet1 | 1.1.2.2 | 885717     |         | 640   |
 | 545897 | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 545898 | v1:4     | ethernet2 | 1.1.3.4 | 661199     |         | 1280  |
 | 545899 | null     | null      | null    | unlabelled |         | 0     |
 | 545900 | null     | null      | null    | unlabelled |         | 0     |
 | 545901 | null     | null      | null    | unlabelled |         | 0     |
 | 545902 | null     | null      | null    | unlabelled |         | 0     |
 | 545903 | null     | null      | null    | unlabelled |         | 0     |
 | 625735 | v1:4     | null      | null    | unlabelled | local   | 0     |
 | 689038 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 710399 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 965970 | v1:6     | 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 |
 |--------|----------|-----------|---------|------------|---------|-------|
 | 62185  | v1:6     | null      | null    | unlabelled | local   | 0     |
 | 86636  | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 114074 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 169515 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 199906 | v1:4     | ethernet1 | 1.1.3.3 | 3          |         | 0     |
 | 268570 | tester:4 | null      | null    | unlabelled | local   | 0     |
 | 431407 | v1:6     | ethernet1 | 1236::3 | 3          |         | 0     |
 | 554985 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 630145 | tester:6 | null      | null    | unlabelled | local   | 0     |
 | 661195 | null     | null      | null    | unlabelled |         | 0     |
 | 661196 | v1:4     | ethernet1 | 1.1.3.3 | 545895     |         | 0     |
 | 661197 | v1:4     | ethernet1 | 1.1.3.3 | 545896     |         | 0     |
 | 661198 | v1:4     | ethernet1 | 1.1.3.3 | 545897     |         | 0     |
 | 661199 | v1:4     | null      | null    | unlabelled | local   | 1920  |
 | 661200 | null     | null      | null    | unlabelled |         | 0     |
 | 661201 | null     | null      | null    | unlabelled |         | 0     |
 | 661202 | null     | null      | null    | unlabelled |         | 0     |
 | 661203 | null     | null      | null    | unlabelled |         | 0     |
 | 661204 | null     | null      | null    | unlabelled |         | 0     |
 | 900984 | null     | null      | null    | unlabelled |         | 0     |
 | 900985 | v1:6     | ethernet1 | 1236::3 | 251946     |         | 0     |
 | 900986 | v1:6     | ethernet1 | 1236::3 | 251947     |         | 0     |
 | 900987 | v1:6     | ethernet1 | 1236::3 | 251948     |         | 0     |
 | 900988 | v1:6     | null      | null    | unlabelled | local   | 1920  |
 | 900989 | null     | null      | null    | unlabelled |         | 0     |
 | 900990 | null     | null      | null    | unlabelled |         | 0     |
 | 900991 | null     | null      | null    | unlabelled |         | 0     |
 | 900992 | null     | null      | null    | unlabelled |         | 0     |
 | 900993 | null     | null      | null    | unlabelled |         | 0     |
 | 935011 | v1:4     | null      | null    | unlabelled | local   | 0     |
 |________|__________|___________|_________|____________|_________|_______|
r4#
r4#