want: []byte{0x39, 0x01, 0x00},
		},
		{
			in:   FromInt32(-1 - math.MaxUint16), // min negative integer representable in three bytes
			want: []byte{0x39, 0xff, 0xff},
		},
		{
			in:   FromInt32(-2 - math.MaxUint16), // max negative integer representable in five bytes
			want: []byte{0x3a, 0x00, 0x01, 0x00, 0x00},
		},
		{
			in:   FromInt32(math.MinInt32), // min negative integer representable by Go int32

	BYTE $0x24; BYTE $0x25; BYTE $0x06; BYTE $0x17
	BYTE $0x28; BYTE $0x29; BYTE $0x2a; BYTE $0x2b
	BYTE $0x2c; BYTE $0x09; BYTE $0x0a; BYTE $0x1b
	BYTE $0x30; BYTE $0x31; BYTE $0x1a; BYTE $0x33
	BYTE $0x34; BYTE $0x35; BYTE $0x36; BYTE $0x08
	BYTE $0x38; BYTE $0x39; BYTE $0x3a; BYTE $0x3b
	BYTE $0x04; BYTE $0x14; BYTE $0x3e; BYTE $0xff
	BYTE $0x41; BYTE $0xaa; BYTE $0x4a; BYTE $0xb1

	SOL_SOCKET                       = 0x1
	SO_ACCEPTCONN                    = 0x1e
	SO_ATTACH_BPF                    = 0x32
	SO_ATTACH_REUSEPORT_CBPF         = 0x33
	SO_ATTACH_REUSEPORT_EBPF         = 0x34
	SO_BINDTODEVICE                  = 0x19
	SO_BINDTOIFINDEX                 = 0x3e
	SO_BPF_EXTENSIONS                = 0x30
	SO_BROADCAST                     = 0x6
	SO_BSDCOMPAT                     = 0xe

	special := map[int]struct{}{
		0x2d: {}, // -
		0x2e: {}, // .
		0x2f: {}, // /
		0x5c: {}, // \
		0x5f: {}, // _
		0x7e: {}, // ~
	}
	if _, found := special[i]; found {
		return true
	}
	if 0x30 <= i && i <= 0x39 {
		// 0-9
		return true
	}
	if 0x41 <= i && i <= 0x5a {
		// A-Z
		return true
	}
	if 0x61 <= i && i <= 0x7a {
		// a-z
		return true
	}
	return false
}

	SOL_SOCKET                       = 0x1
	SO_ACCEPTCONN                    = 0x1e
	SO_ATTACH_BPF                    = 0x32
	SO_ATTACH_REUSEPORT_CBPF         = 0x33
	SO_ATTACH_REUSEPORT_EBPF         = 0x34
	SO_BINDTODEVICE                  = 0x19
	SO_BINDTOIFINDEX                 = 0x3e
	SO_BPF_EXTENSIONS                = 0x30
	SO_BROADCAST                     = 0x6
	SO_BSDCOMPAT                     = 0xe

	// set up R5 to point to the "shunt" path which set 1 to R3 (failure)
	BYTE $0xB9; BYTE $0x82; BYTE $0x00; BYTE $0x33 // xgr   3,3
	BYTE $0xA7; BYTE $0x55; BYTE $0x00; BYTE $0x04 // bras  5,lbl1
	BYTE $0xA7; BYTE $0x39; BYTE $0x00; BYTE $0x01 // lghi  3,1

	// if r3 is not zero (failed) then branch to finish
	BYTE $0xB9; BYTE $0x02; BYTE $0x00; BYTE $0x33 // lbl1     ltgr  3,3
	BYTE $0xA7; BYTE $0x74; BYTE $0x00; BYTE $0x08 // brc   b'0111',lbl2

	SOL_SOCKET                       = 0x1
	SO_ACCEPTCONN                    = 0x1e
	SO_ATTACH_BPF                    = 0x32
	SO_ATTACH_REUSEPORT_CBPF         = 0x33
	SO_ATTACH_REUSEPORT_EBPF         = 0x34
	SO_BINDTODEVICE                  = 0x19
	SO_BINDTOIFINDEX                 = 0x3e
	SO_BPF_EXTENSIONS                = 0x30
	SO_BROADCAST                     = 0x6
	SO_BSDCOMPAT                     = 0xe

	IFLA_PARENT_DEV_BUS_NAME                   = 0x39
	IFLA_GRO_MAX_SIZE                          = 0x3a
	IFLA_TSO_MAX_SIZE                          = 0x3b
	IFLA_TSO_MAX_SEGS                          = 0x3c
	IFLA_ALLMULTI                              = 0x3d
	IFLA_DEVLINK_PORT                          = 0x3e
	IFLA_GSO_IPV4_MAX_SIZE                     = 0x3f
	IFLA_GRO_IPV4_MAX_SIZE                     = 0x40

	ETHTOOL_SRXCLSRLDEL                         = 0x31
	ETHTOOL_SRXCLSRLINS                         = 0x32
	ETHTOOL_SRXCSUM                             = 0x15
	ETHTOOL_SRXFH                               = 0x2a
	ETHTOOL_SRXFHINDIR                          = 0x39
	ETHTOOL_SRXNTUPLE                           = 0x35
	ETHTOOL_SSET                                = 0x2

	0x04, 0x56, 0x0c, 0xfd, 0x91, 0x7b, 0x7b, 0xa5, 0xc9, 0xab, 0x09, 0x1c, 0x4e, 0x51, 0xdb, 0x77,
	0x61, 0x7c, 0x3e, 0x8a, 0x9c, 0xda, 0x16, 0xa9, 0xf3, 0x09, 0x85, 0x5e, 0x84, 0x3e, 0xcf, 0x69,
	0xca, 0xc6, 0x9c, 0x91, 0x8d, 0x59, 0x73, 0x9a, 0xb4, 0x31, 0x93, 0xd7, 0x3d, 0xf7, 0x9d, 0xb6,
	0x98, 0xa4, 0x14, 0x86, 0x19, 0x35, 0x7a, 0x1e, 0xa0, 0x4e, 0x76, 0xdc, 0x1a, 0xa9, 0x38, 0xd1,