/**
  * Extracts the value of the force-ipv4 option from a given connection.
  *
  * @param \Phergie\Irc\ConnectionInterface $connection
  * @return boolean TRUE to force use of IPv4, FALSE otherwise
  */
 protected function getForceIpv4Flag(ConnectionInterface $connection)
 {
     return (bool) $connection->getOption('force-ipv4') ?: false;
 }