From f4256712164bee7091126de4f7250b49fdae973f Mon Sep 17 00:00:00 2001
From: Gardouille <gardouille@gmail.com>
Date: Fri, 11 Sep 2015 19:38:03 +0200
Subject: [PATCH] Add Iptables rules if dhclient is available.

---
 firewall | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/firewall b/firewall
index 76a716e..564aa0f 100755
--- a/firewall
+++ b/firewall
@@ -191,10 +191,12 @@ fi
 #  #### DNS (résolution de noms de domaines, ... ...)
 #  $IPT -A OUTPUT -j ACCEPT -p udp -o ${ILAN} --dport 53 -m state --state NEW -m comment --comment "DNS out udp"
 #  $IPT -A OUTPUT -j ACCEPT -p tcp -o ${ILAN} --dport 53 -m state --state NEW -m comment --comment "DNS out tcp"
-#
-#  #### DHCP
-#  $IPT -A OUTPUT -j ACCEPT -p udp -o ${ILAN} -s "${IPLAN}" --sport 68 -m comment --comment "DHCPREQUEST"
-#
+
+if [ $(command -v dhclient) ]; then
+  #### DHCP
+  $IPT -A OUTPUT -j ACCEPT -p udp -o ${ILAN} -s "${IPLAN}" --sport 68 -m comment --comment "DHCPREQUEST"
+fi
+
 #  #### HTTP (maj, ...)
 #  $IPT -A OUTPUT -j ACCEPT -p tcp -o ${ILAN} --dport 80 -m state --state NEW -m comment --comment "HTTP out"
 #  $IPT -A OUTPUT -j ACCEPT -p tcp -o ${ILAN} --dport 443 -m state --state NEW -m comment --comment "HTTPS out"