tmpDir := t.TempDir()
	socket := filepath.Join(tmpDir, "unixsock")

	// Start a unixpacket server.
	addr := &net.UnixAddr{
		Name: socket,
		Net:  "unixpacket",
	}
	server, err := net.ListenUnix("unixpacket", addr)
	if err != nil {
		t.Skipf("skipping test because opening a unixpacket socket failed: %v", err)
	}

	// Start a goroutine for the server to accept one connection

pkg net, func ListenPacket(string, string) (PacketConn, error)
pkg net, func ListenTCP(string, *TCPAddr) (*TCPListener, error)
pkg net, func ListenUDP(string, *UDPAddr) (*UDPConn, error)
pkg net, func ListenUnix(string, *UnixAddr) (*UnixListener, error)
pkg net, func ListenUnixgram(string, *UnixAddr) (*UDPConn, error)
pkg net, func LookupAddr(string) ([]string, error)
pkg net, func LookupCNAME(string) (string, error)