D437.1774852911.diff
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D437.1774852911.diff
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	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]),