mirror of
https://github.com/tailscale/tailscale.git
synced 2025-10-31 08:11:32 +01:00
ee976ad704
Some machines have multiple network interfaces with the same MAC address. Updates tailscale/corp#21371 Signed-off-by: Anton Tolchanov <anton@tailscale.com>
27 lines
572 B
Go
27 lines
572 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
|
|
// SPDX-License-Identifier: BSD-3-Clause
|
|
|
|
package posture
|
|
|
|
import (
|
|
"net/netip"
|
|
"slices"
|
|
|
|
"tailscale.com/net/netmon"
|
|
)
|
|
|
|
// GetHardwareAddrs returns the hardware addresses of all non-loopback
|
|
// network interfaces.
|
|
func GetHardwareAddrs() (hwaddrs []string, err error) {
|
|
err = netmon.ForeachInterface(func(i netmon.Interface, _ []netip.Prefix) {
|
|
if i.IsLoopback() {
|
|
return
|
|
}
|
|
if a := i.HardwareAddr.String(); a != "" {
|
|
hwaddrs = append(hwaddrs, a)
|
|
}
|
|
})
|
|
slices.Sort(hwaddrs)
|
|
return slices.Compact(hwaddrs), err
|
|
}
|