Uncaught exception 'Exception' with message 'failed to connect: Cannot assign requested address

[etalot]

Sometimes i've got this:
PHP Fatal error: Uncaught exception 'Exception' with message 'failed to connect: Cannot assign requested address' in /root/script.php:75
Stack trace:
#0 /root/script.php(75): Tarantool->select(4, 0, 464008538842)
#1 {main}

thrown in /root/script.php on line 75

statistics:
  REPLACE:    { rps:  0    , total:  889626      }
  SELECT:     { rps:  259  , total:  12847488    }
  UPDATE:     { rps:  0    , total:  0           }
  DELETE_1_3: { rps:  0    , total:  0           }
  DELETE:     { rps:  0    , total:  2           }
  CALL:       { rps:  0    , total:  0           }

ulimit -n
16384

Please help.

[etalot]

Update: It's not tarantool problem. Just running out of tcp ports.
I recomend:

sysctl -w net.ipv4.ip_local_port_range="5024 64000"

or/and:

echo 1 > /proc/sys/net/ipv4/tcp_tw_reuse