diff --git a/apps/kolab_guam/src/kolab_guam_listener.erl b/apps/kolab_guam/src/kolab_guam_listener.erl
--- a/apps/kolab_guam/src/kolab_guam_listener.erl
+++ b/apps/kolab_guam/src/kolab_guam_listener.erl
@@ -75,7 +75,23 @@
                 listen_options(none, Addr)
     end.
 
-default_listen_options() -> [ { reuseaddr, true }, {active, false}, inet6 ].
+default_listen_options() -> [ { reuseaddr, true }, {active, false} | ipv6_opts() ].
+
+ipv6_opts() ->
+    case check_for_ipv6(inet:getifaddrs()) of
+        true -> [inet6];
+        _ -> []
+    end.
+
+check_for_ipv6({ok, Ifaddrs}) -> check_for_ipv6(Ifaddrs);
+check_for_ipv6([]) -> false;
+check_for_ipv6([{_iface, Attrs}|Ifaddrs]) ->
+    Addrs = proplists:get_all_values(addr, Attrs),
+    case lists:any(fun(Addr) -> size(Addr) == 8 end, Addrs) of
+         true -> true;
+         _ -> check_for_ipv6(Ifaddrs)
+    end;
+check_for_ipv6(_) -> false.
 
 create_initial_listeners(ListenerPoolSize, PID) when is_pid(PID) ->
     lager:debug("Creating session pool of size ~p for listener ~p", [ListenerPoolSize, PID]),