::                        0:0:0:0:0:0:0:0/128       yes
::/0                      0:0:0:0:0:0:0:0/0         yes
::1/128                   0:0:0:0:0:0:0:1/128       yes
1::/64                    1:0:0:0:0:0:0:0/64        yes
:                                                   no
:/96                                                no
2001:1::/64               2001:1:0:0:0:0:0:0/64     yes
2001:0:6:4003::/64        2001:0:6:4003:0:0:0:0/64  yes
2001::12/128              2001:0:0:0:0:0:0:12/128   yes
2001::15/0                2001:0:0:0:0:0:0:15/0     yes
2001::15/-1                                         no
2001::15/129                                        no
20012::15/96                                        no
2001:1:::2/96                                       no
2001::1::2/96                                       no
2001::1:2::3/96                                     no
2001:2:3:4:5:6:7/48                                 no
2001:2:3:4::6:7/48        2001:2:3:4:0:0:6:7/48     yes
2001:2:3:4:5:6:7:8/64     2001:2:3:4:5:6:7:8/64     yes
2001:2:3:4:5:6:7:8:9/96                             no
2001:2:3:4::6:7:8:9/96                              no