| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| flag | Package flag implements command-line flag parsing. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/moby/vpnkit/go/pkg/libproxy | Package libproxy provides a network Proxy interface and implementations for TCP and UDP. |
| github.com/moby/vpnkit/go/pkg/vpnkit | Package vpnkit allows a running VPNKit service to be reconfigured. |
| github.com/spf13/viper | |
| golang.org/x/crypto/ssh/terminal | Package terminal provides support functions for dealing with terminals, as commonly found on UNIX systems. |
| log | Package log implements a simple logging package. |
| net | Package net provides a portable interface for network I/O, including TCP/IP, UDP, domain name resolution, and Unix domain sockets. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| os/signal | Package signal implements access to incoming signals. |
| syscall | Package syscall contains an interface to the low-level operating system primitives. |