tests := []struct {
		ip       []byte
		wantAddr Addr
		wantOK   bool
	}{
		{
			ip:       []byte{10, 0, 0, 1},
			wantAddr: mustIP("10.0.0.1"),
			wantOK:   true,
		},
		{
			ip:       []byte{0xfe, 0x80, 15: 0x01},
			wantAddr: mustIP("fe80::01"),
			wantOK:   true,
		},
		{
			ip:       []byte{0, 1, 2},
			wantAddr: Addr{},
			wantOK:   false,
		},
		{
			ip:       nil,