ipv6 problem

[Blaster-777]

hi i want to run proxy only on ipv6

 {mtproto_proxy,
  %% see src/mtproto_proxy.app.src for examples.
  [
   {ports,
    [#{name => mtp_handler_1,
       listen_ip => "2001:db8:85a3::8a2e:370:7334",
       port => 1443,
       secret => <<"d0d6e111bada5511fcce9584deadbeef">>,
       tag => <<"dcbe8f1493fa4cd9ab300891c0b5b326">>},
   ]},

 {lager,
<...>

but when i see the logs proxy started on 0.0.0.0