000002d0  fc 63 e1 22 f8 1f 8d ad  50 09 1a 92 a4 57 ea 88  |.c."....P....W..|
000002e0  6d 9c 20 70 f1 8b 85 15  ec 8e b2 b3 07 00 80 b1  |m. p............|
000002f0  03 03 a7 cf 8f 73 e2 a3  29 0d 55 4a 06 72 db e5  |.....s..).UJ.r..|
00000300  65 41 44 49 05 1c 37 17  1c 02 6e b1 f4 e8 a9 bb  |eADI..7...n.....|
00000310  00 24 3e 3a 3c d6 1c f6  dd 21 a4 e3 61 b0 1d 2e  |.$>:<....!..a...|

type T struct {
	S
}

var a1 = S{0, 0, 0, 1, 2, 3}
var b1 = S{X: 1, Z: 3, Y: 2}

var a2 = S{0, 0, 0, 0, 0, 0}
var b2 = S{}

var a3 = T{S{1, 2, 3, 0, 0, 0}}
var b3 = T{S: S{A: 1, B: 2, C: 3}}

var a4 = &[16]byte{0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0}
var b4 = &[16]byte{4: 1, 1, 1, 1, 12: 1, 1}

var a5 = &[16]byte{1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0}
var b5 = &[16]byte{1, 4: 1, 1, 1, 1, 12: 1, 1}

	}
	if strings.Contains(s[i+1:], ".") {
		ip, err := parseIPv4Slow(s[i+1:])
		if err != nil {
			return "", err
		}
		a4 := ip.As4()
		s = fmt.Sprintf("%s:%02x%02x:%02x%02x", s[:i], a4[0], a4[1], a4[2], a4[3])
	}

	// Find and expand a ::, if any.
	fs := strings.Split(s, "::")
	switch len(fs) {
	case 1:
		// No ::, nothing to do.
	case 2:

00000030  2d c2 c2 12 0a db f5 8f  e4 1f dd 16 ec 83 ad db  |-...............|
00000040  2d 8b ec fa aa 56 44 4e  d4 af ce d2 9f 44 3d de  |-....VDN.....D=.|
00000050  12 29 db bc 29 2a df 99  d7 d0 53 79 84 a4 b8 2d  |.)..)*....Sy...-|
00000060  8b 5c e6 a4 b7 98 07 5a  f4 63 10 21 87 13 09 07  |.\.....Z.c.!....|
00000070  28 98 49 48 07 70 c1 ab  8b 62 6d 40 a8 47 27 67  |(.IH.p...bm@.G'g|

000000d0  58 95 86 e9 3d 19 e6 5c  27 73 60 c8 8d 78 02 f4  |X...=..\'s`..x..|
000000e0  1d a4 98 09 a3 19 70 69  3c 25 62 66 2a ab 22 23  |......pi<%bf*."#|
000000f0  c5 7b 85 38 4f 2e 09 73  32 a7 bd 3e 9b ad ca 84  |.{.8O..s2..>....|
00000100  07 e6 0f 3a ff 77 c5 9d  41 85 00 8a b6 9b ee b0  |...:.w..A.......|
00000110  a4 3f 2d 4c 4c e6 42 3e  bb 51 c8 dd 48 54 f4 0c  |.?-LL.B>.Q..HT..|

000001d0  0e 44 10 e6 45 e1 a2 11  27 e6 70 a8 d3 a4 2e a1  |.D..E...'.p.....|
000001e0  43 d6 a5 46 79 d1 e8 37  07 c0 29 68 fa ab dc 67  |C..Fy..7..)h...g|
000001f0  91 94 04 28 aa 12 01 3f  c7 4f d6 a8 93 99 53 5e  |...(...?.O....S^|
00000200  0b 5f ff 83 a0 14 47 23  e6 5e 3c a0 e4 47 28 74  |._....G#.^<..G(t|
00000210  20 a4 cc 28 03 41 62 5a  27 eb 22 33 ba ac e2 63  | ..(.AbZ'."3...c|

000002d0  55 62 f4 da 8f 60 db f7  76 80 d5 4d 37 f6 43 49  |Ub...`..v..M7.CI|
000002e0  95 3d 96 f6 e2 fd a4 07  ae 24 8c fa bd 02 41 20  |.=.......$....A |
000002f0  a1 50 78 a3 dd 99 c0 cf  74 f1 c0 79 b1 13 9d bc  |.Px.....t..y....|
00000300  0b 37 cf 7c 09 11 b8 a4  71 65 e8 be ff 3a b9 85  |.7.|....qe...:..|
00000310  cd b4 30 f8 1f d6 2e 83  96 6c 01 3e d2 00 a7 5b  |..0......l.>...[|

// syscall6 calls a function in libc on behalf of the syscall package.
// syscall6 takes a pointer to a struct like:
// struct {
//	fn    uintptr
//	a1    uintptr
//	a2    uintptr
//	a3    uintptr
//	a4    uintptr
//	a5    uintptr
//	a6    uintptr
//	r1    uintptr
//	r2    uintptr
//	err   uintptr
// }
// syscall6 must be called on the g0 stack with the
// C calling convention (use libcCall).
//

package lif

import (
	"syscall"
	"unsafe"
)

//go:cgo_import_dynamic libc_ioctl ioctl "libc.so"

//go:linkname procIoctl libc_ioctl

var procIoctl uintptr

func sysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (uintptr, uintptr, syscall.Errno)

func ioctl(s, ioc uintptr, arg unsafe.Pointer) error {
	_, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procIoctl)), 3, s, ioc, uintptr(arg), 0, 0, 0)
	if errno != 0 {

// syscall6 calls a function in libc on behalf of the syscall package.
// syscall6 takes a pointer to a struct like:
// struct {
//	fn    uintptr
//	a1    uintptr
//	a2    uintptr
//	a3    uintptr
//	a4    uintptr
//	a5    uintptr
//	a6    uintptr
//	r1    uintptr
//	r2    uintptr
//	err   uintptr
// }
// syscall6 must be called on the g0 stack with the
// C calling convention (use libcCall).
//