pkg net, method (*IP) UnmarshalText([]uint8) error
pkg net, method (*TCPConn) SetKeepAlivePeriod(time.Duration) error
pkg net, method (IP) MarshalText() ([]uint8, error)
pkg net, type Dialer struct, DualStack bool
pkg net/smtp, method (*Client) Close() error
pkg os (linux-arm), const O_SYNC = 1052672
pkg os (linux-arm-cgo), const O_SYNC = 1052672
pkg reflect, method (Value) SetCap(int)

pkg net, const IPv6len ideal-int
pkg net, func CIDRMask(int, int) IPMask
pkg net, func Dial(string, string) (Conn, error)
pkg net, func DialIP(string, *IPAddr, *IPAddr) (*IPConn, error)
pkg net, func DialTCP(string, *TCPAddr, *TCPAddr) (*TCPConn, error)
pkg net, func DialTimeout(string, string, time.Duration) (Conn, error)
pkg net, func DialUDP(string, *UDPAddr, *UDPAddr) (*UDPConn, error)