diff --git a/group_vars/all b/group_vars/all
index 22e46b047..c212ee193 100644
--- a/group_vars/all
+++ b/group_vars/all
@@ -20,7 +20,7 @@ mds: true # disable mds configuration in ceph.conf
 # Rados Gateway options
 radosgw: true
 redhat_distro_ceph_extra: centos6.4 # supported distros are centos6.3, centos6.4, centos6, fedora18, fedora19, opensuse12.2, rhel6.3, rhel6.4, rhel6.5, rhel6, sles11sp2
-radosgw_interface: eth1
+radosgw_interface: eth1 # the public interface which the radosgw talks to the world with, this variable is used in the haproxy role, this does not need to be set if haproxy is not used.
 
 # OSD options
 journal_size: 100