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// Copyright (c) 2021 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.
//go:build ts_macext && (darwin || ios)
// +build ts_macext
// +build darwin ios
package ipnlocal
import (
"fmt"
"net"
"inet.af/netaddr"
"tailscale.com/net/interfaces"
"tailscale.com/net/netns"
)
func init() {
initListenConfig = initListenConfigNetworkExtension
}
// initListenConfigNetworkExtension configures nc for listening on IP
// through the iOS/macOS Network/System Extension (Packet Tunnel
// Provider) sandbox.
func initListenConfigNetworkExtension(nc *net.ListenConfig, ip netaddr.IP, st *interfaces.State, tunIfName string) error {
tunIf, ok := st.Interface[tunIfName]
if !ok {
return fmt.Errorf("no interface with name %q", tunIfName)
}
return netns.SetListenConfigInterfaceIndex(nc, tunIf.Index)
}
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