CMD_PASV
s->cmd = CMD_PASV;
if (ipv6_mode && (s->cmd == CMD_PASV || s->cmd == CMD_PORT)) {
case CMD_PASV:
case CMD_PASV:
if (cmd == CMD_PORT || cmd == CMD_PASV) {
if ((s->cmd == CMD_PASV && strncmp("227 ", linebuf, 4) == 0) ||
if (s->cmd == CMD_PASV || s->cmd == CMD_EPSV) {