As such, if you use such systems, even for totally legitimate purposes, and your attempt to send content to this site happens to use an address in the same IP address range as one of those pesky units then you will be unable to do so.
If this does happen then you have my apologies but perhaps, if you disconnect completely from this site, you may get through ten minutes later (if you are using Tor) when that system will cause a change to the exit node address you use...
Edited: 2017/07/27 to reflect that there is less mess to deal with now we have upgraded the Forum system...