dmit更换ip，这里选哪个选项啊

没看明白，即使中文也没看明白。我们到底选哪个？

在free ip栏：
Free Later Freeipv4

Your request will be reviewed by staff before the change can proceed.
Requirements
• At least 15 days since last change
• At least 7 days since purchase
• At least 7 days until expiration
• ICMP and all TCP ports are blocked.（这句话啥意思，tcp 端口禁用，咱用这vps能干啥？）