--- /usr/lib/systemd/system/memcached.service	2012-10-09 17:43:41.000000000 -0600
+++ /etc/systemd/system/memcached.service	2012-11-09 20:02:03.500151319 -0700
@@ -4,8 +4,9 @@
 
 [Service]
 User=memcached
+EnvironmentFile=/etc/conf.d/memcached
 # Remove '-l 127.0.0.1' to listen on all addresses
-ExecStart=/usr/bin/memcached -l 127.0.0.1
+ExecStart=/usr/bin/memcached $MEMCACHED_ARGS
 
 [Install]
 WantedBy=multi-user.target