Hmm. In module lets-chat is not completely transferred to the list of options in the direction of the node-xmpp server, namely, is not passed any value of the parameter host, which is inside node-xmpp-server has a default value of "::" i.e. ipv6 for all interfaces. Added hands in the code, the transmission parameter the host working.
One of two things: either the error was fixed a long time, and I just got a distro with an error in the file, with diff nodes not patcher file a bug, or nobody uses a built-in XMPP server freepbx. It's a shame.