wg-quick: darwin: account for "link#XX" gateways

On macOS, under specific configurations, the `netstat -nr -f inet` and
`netstat -nr -f inet6` outputs break gateway collection.

Signed-off-by: Laura Hausmann <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>

Author: zotanmew

src/wg-quick/darwin.bash

@@ -194,14 +194,14 @@ collect_gateways() {
 
 	GATEWAY4=""
 	while read -r destination gateway _; do
-		[[ $destination == default ]] || continue
+		[[ $destination == default && $gateway != "link#"* ]] || continue
 		GATEWAY4="$gateway"
 		break
 	done < <(netstat -nr -f inet)
 
 	GATEWAY6=""
 	while read -r destination gateway _; do
-		[[ $destination == default ]] || continue
+		[[ $destination == default && $gateway != "link#"* ]] || continue
 		GATEWAY6="$gateway"
 		break
 	done < <(netstat -nr -f inet6)