IPv6 not supported by TransactionAdd

Hello,


We implemented the SKY API in our PHP (Drupal) app in the Sprint of 2019. It worked great through the 2019 giving season and performed well (in terms of volume) through the 2020 giving season as well. But in November of 2020 we started to get quite a few transactions being rejected due to block-listed IP addresses.


We did some digging and feel that the issue is related to some code where we are trying to convert an IPv6 format to IPv4. Our research tells us that this isn't really possible but we've also seen claims that some IPv6 in fact have their IPv4 equivalent baked in and we simple need to covert it. We've tried various code suggestions and we're not able to get anything accurate to what we need.


We've surfaced this issue to Blackbaud and they don't appear to know of any others who are having this problem. So I'm reaching out to see who else might be having this issue and what they are doing to solve it.


We made a request to have the IPv6 acceptable via the API but this is not in their roadmap.