| 1 | # GNS |
| 2 | |
| 3 | `gns` is a process created by `mini_init`. Its job is to configure networking within the WSL2 virtual machine. |
| 4 | |
| 5 | ## Networking configuration |
| 6 | |
| 7 | Networking settings are shared by all WSL2 distributions. While WSL2 is running, `gns` maintains an hvsocket channel to [wslservice.exe](wslservice.exe.md), which is used to send various networking related configurations such as: |
| 8 | |
| 9 | - Interface IP configuration |
| 10 | - Routing table entries |
| 11 | - DNS configuration |
| 12 | - MTU size configuration |
| 13 | |
| 14 | When DNS tunneling is enabled, `gns` is also responsible for replying to DNS requests. |
| 15 | |
| 16 | See `src/linux/init/GnsEngine.cpp` and `src/windows/service/exe/GnsChannel.cpp` |