arp

Documentation

Index

• Constants
• func InjectArp(ip net.IP, mac net.HardwareAddr, flags int32, dev string) (err error)
• func InjectArpFd(fd uintptr, ip net.IP, mac net.HardwareAddr, flags int32, dev string) (err error)

Constants

const (
	// completed entry (ha valid)
	ATF_COM = 0x02
	// permanent entry
	ATF_PERM = 0x04
	// publish entry
	ATF_PUBL = 0x08
	// has requested trailers
	ATF_USETRAILERS = 0x10
	// want to use a netmask (only for proxy entries)
	ATF_NETMASK = 0x20
	// don't answer this addresses
	ATF_DONTPUB = 0x40
)

ARP Flag values these are not in golang.org/x/sys/unix

Functions

func InjectArp

func InjectArp(ip net.IP, mac net.HardwareAddr, flags int32, dev string) (err error)

InjectArp injects an ARP entry into dev's ARP table syscalls roughly based on https://www.unix.com/302447674-post3.html see:

https://github.com/torvalds/linux/blob/8cf8821e15cd553339a5b48ee555a0439c2b2742/net/ipv4/arp.c#L1179
https://github.com/torvalds/linux/blob/8cf8821e15cd553339a5b48ee555a0439c2b2742/net/ipv4/arp.c#L1024

func InjectArpFd

func InjectArpFd(fd uintptr, ip net.IP, mac net.HardwareAddr, flags int32, dev string) (err error)