default_ssh_port
port = options->port <= 0 ? default_ssh_port() : options->port;
int default_ssh_port(void);
port = default_ssh_port();
jumpport = default_ssh_port();
options.port = default_ssh_port();
port = default_ssh_port();
snprintf(strport, sizeof strport, "%u", default_ssh_port());
port = default_ssh_port();