tailscale/net/interfaces/interfaces_darwin.go

// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package interfaces

import (
	"syscall"

	"golang.org/x/net/route"
)

// fetchRoutingTable calls route.FetchRIB, fetching NET_RT_DUMP2.
func fetchRoutingTable() (rib []byte, err error) {
	return route.FetchRIB(syscall.AF_UNSPEC, syscall.NET_RT_DUMP2, 0)
}

func parseRoutingTable(rib []byte) ([]route.Message, error) {
	return route.ParseRIB(syscall.NET_RT_IFLIST2, rib)
}