duplicated pins

[Stricted]

im just confused when i do gpio readall then there are 2 pins dupliated listed with 2 different gpio and wiringpi numbers

im talking about this lines:
| 8 | 2 | 3 | SDA | IN | High |
| 9 | 3 | 5 | SCL | IN | High |

| 17 | 28 | 3 | GPIO 8 | IN | Low |
| 19 | 30 | 5 | GPIO10 | IN | Low |

how is it possible to have 2 times the same physical pin with different modes?

edit: im using an banana pi