Hi, I'm subscribed to this long-standing bug and saw it had an update today basically saying that it's still broken in 3.4.2:
https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7211 And I agree, it is still broken in 3.4.2. An IPv6 address will be looked up in a DNS list that contains IPv4 addresses and will sometimes match. So, firstly, could the bug be re-opened? Secondly, can we discuss how to fix it? Back in 2017 (comment 6) I proposed adding an "asn_lookup_v6" as well as the existing "asn_lookup" and querying IPv6 addresses only in asn_lookup_v6 if set. I've never developed a plugin before but if that approach is acceptable then I can look into doing it. Cheers, Andy