const syscall.SizeofIfaMsghdr

2 uses

	syscall (current package)
		route_darwin.go#L19: 		return &InterfaceAddrMessage{Header: p.Header, Data: b[SizeofIfaMsghdr:any.Msglen]}
		ztypes_darwin_arm64.go#L302: 	SizeofIfaMsghdr   = 0x14