Make it obvious how to support dual stack for MongooseIM

installation/pleroma-mongooseim.cfg

@@ -215,7 +215,9 @@
       ]}
   ]},
 
-  { 5222, ejabberd_c2s, [
+  %% If you want dual stack, you have to clone this entire config stanza
+  %% and change the bind to "::"
+  { {5222, "0.0.0.0"}, ejabberd_c2s, [
 
 			%%
 			%% If TLS is compiled in and you installed a SSL
@@ -246,7 +248,9 @@
   %%			{max_stanza_size, 65536}
   %%		       ]},
 
-  { 5269, ejabberd_s2s_in, [
+  %% If you want dual stack, you have to clone this entire config stanza
+  %% and change the bind to "::"
+  { {5269, "0.0.0.0"}, ejabberd_s2s_in, [
 			   {shaper, s2s_shaper},
 			   {max_stanza_size, 131072},
 			   {protocol_options, ["no_sslv3"]}