IPv6 anonymization improvment #137
Description
The IPv6 anonymization removes the last 4 groups and appends "::0", which may not result in valid IPv6 notation for all cases. If the IPv6 address has fewer than 4 groups after the split (e.g., compressed addresses with ::), this could produce malformed addresses. Consider using a more robust IPv6 anonymization approach that properly handles compressed notation, or use a dedicated library for IP address manipulation.
Originally posted by @Copilot in #135 (comment)