netlink: don't start over iteration on multipart non-first allowedips

Reported-by: Matt Layher <mdlayher@gmail.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/src/tests/netns.sh b/src/tests/netns.sh
index d1950a0..29e1fd4 100755
--- a/src/tests/netns.sh
+++ b/src/tests/netns.sh
@@ -439,6 +439,30 @@ n0 wg setconf wg0 <(printf '%s\n' "${config[@]}")
 n0 wg showconf wg0 > /dev/null
 ip0 link del wg0
 
+allowedips=( )
+for i in {1..197}; do
+        allowedips+=( abcd::$i )
+done
+saved_ifs="$IFS"
+IFS=,
+allowedips="${allowedips[*]}"
+IFS="$saved_ifs"
+ip0 link add wg0 type wireguard
+n0 wg set wg0 peer "$pub1"
+n0 wg set wg0 peer "$pub2" allowed-ips "$allowedips"
+{
+	read -r pub allowedips
+	[[ $pub == "$pub1" && $allowedips == "(none)" ]]
+	read -r pub allowedips
+	[[ $pub == "$pub2" ]]
+	i=0
+	for _ in $allowedips; do
+		((++i))
+	done
+	((i == 197))
+} < <(n0 wg show wg0 allowed-ips)
+ip0 link del wg0
+
 ! n0 wg show doesnotexist || false
 
 ip0 link add wg0 type wireguard