diff --git a/etc/quantum/rootwrap.d/l3.filters b/etc/quantum/rootwrap.d/l3.filters
index 5a9533a76f..ec08d595ea 100644
--- a/etc/quantum/rootwrap.d/l3.filters
+++ b/etc/quantum/rootwrap.d/l3.filters
@@ -18,6 +18,9 @@ route: CommandFilter, /sbin/route, root
 
 # metadata proxy
 metadata_proxy: CommandFilter, /usr/bin/quantum-ns-metadata-proxy, root
+# If installed from source (say, by devstack), the prefix will be
+# /usr/local instead of /usr/bin.
+metadata_proxy_local: CommandFilter, /usr/local/bin/quantum-ns-metadata-proxy, root
 kill_metadata7: KillFilter, root, /usr/bin/python2.7, -9
 kill_metadata6: KillFilter, root, /usr/bin/python2.6, -9