From ee976ad704980e20ec36c6aaaad0a2ce5b30b3d5 Mon Sep 17 00:00:00 2001
From: Anton Tolchanov <anton@tailscale.com>
Date: Fri, 16 Aug 2024 15:41:48 +0100
Subject: [PATCH] posture: deduplicate MAC addresses before returning them

Some machines have multiple network interfaces with the same MAC
address.

Updates tailscale/corp#21371

Signed-off-by: Anton Tolchanov <anton@tailscale.com>
---
 posture/hwaddr.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/posture/hwaddr.go b/posture/hwaddr.go
index a38cc5be0..dd0b6d8be 100644
--- a/posture/hwaddr.go
+++ b/posture/hwaddr.go
@@ -22,5 +22,5 @@ func GetHardwareAddrs() (hwaddrs []string, err error) {
 		}
 	})
 	slices.Sort(hwaddrs)
-	return
+	return slices.Compact(hwaddrs), err
 }