483 

   484 const (

   485 	TUNNEWPPA = 0x540001

   486 	TUNSETPPA = 0x540002

   487 

   488 	I_STR     = 0x5308

   489 	I_POP     = 0x5303

   490 	I_PUSH    = 0x5302

   491 	I_LINK    = 0x530c

   492 	I_UNLINK  = 0x530d

   493 	I_PLINK   = 0x5316

   494 	I_PUNLINK = 0x5317

   495 

   496 	IF_UNITSEL = -0x7ffb8cca

   497 )

   498 

   499 type strbuf struct {

   500 	Maxlen int32

   501 	Len    int32

   502 	Buf    *int8

   503 }

   504 

   505 type Strioctl struct {

   506 	Cmd    int32

   507 	Timout int32

   508 	Len    int32

   509 	Dp     *int8

   510 }

   511 

   512 type Lifreq struct {

   513 	Name   [32]int8

   514 	Lifru1 [4]byte

   515 	Type   uint32

   516 	Lifru  [336]byte

   517 }