From 41e50edbe5fd5c4a34b27830907f3e49114e8695 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Mon, 24 Jul 2017 23:22:10 +0200
Subject: [PATCH] wg-quick: do not use grep

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
 src/wg-quick.bash | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/wg-quick.bash b/src/wg-quick.bash
index b1fb435..d7e7d68 100755
--- a/src/wg-quick.bash
+++ b/src/wg-quick.bash
@@ -226,7 +226,7 @@ cmd_up() {
 	done
 	set_mtu
 	up_if
-	for i in $(wg show "$INTERFACE" allowed-ips | grep -Po '(?<=[\t ])[0-9.:/a-f]+' | sort -nr -k 2 -t /); do
+	for i in $(while read -r _ i; do for i in $i; do [[ $i =~ ^[0-9a-z:.]+/[0-9]+$ ]] && echo "$i"; done; done < <(wg show "$INTERFACE" allowed-ips) | sort -nr -k 2 -t /); do
 		[[ $(ip route get "$i" 2>/dev/null) == *dev\ $INTERFACE\ * ]] || add_route "$i"
 	done
 	execute_hook "$POST_UP"