| flag | Package flag implements command-line flag parsing. |
| github.com/moby/vpnkit/go/pkg/vpnkit | Package vpnkit allows a running VPNKit service to be reconfigured. |
| io | Package io provides basic interfaces to I/O primitives. |
| log | Package log implements a simple logging package. |
| net/http | Package http provides HTTP client and server implementations. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| runtime | Package runtime contains operations that interact with Go's runtime system, such as functions to control goroutines. |