You can post your unique local unicast address since they are pretty much the same as a IPv4 private address. It has the prefix fc /7 (fd /8).
However I don't suggest you to post your IPv6 public address, especially in a network expert forums. You can try to abstract your question by making reference to its components (Network Identifier or EUI - Extended Unique Identifier) or simply come up with a "fake" one which you can reference later to your actual one.
Take a look at this discussion. It is basically the same question.