Add parser to allow all IPv6 address in a /64 to be combined into one shared bucket #1420
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Added test result
blotus
reviewed
Jul 25, 2025
.tests/ipv6-parser/parser.assert
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Please fill the parser assert file (even though you have added assertions for the scenario to validate the behavior, it's still a parser, so we also want to test it by itself).
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Understood, updated parser.assert file with test results.
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Add parser to allow all IPv6 addresses in a /64 to be combined into one shared bucket. This parser must be used with the crowdsecurity/ipv6_to_range postoverflow. Should there be an IPv6 collection that has both?
This is accomplished by using
TrimSuffix(IpToRange(evt.Meta.source_ip,"/64"),"/64")to rewrite the source IP in the parser/s02-enrich stage to force the lower 64 bits to zero, which is still a valid IPv6 address. When going to scenarios designed for IP addresses all IPv6 addresses in a /64 will now go into a single bucket. On overflow, the crowdsecurity/ipv6_to_range postoverflow remediates on the entire /64 range.Example effects on source_ip:
2001:db8:1234:5678::abcd => 2001:db8:1234:5678::
2001:db8:1234:5678::1234 => 2001:db8:1234:5678::
2001:db8:1234:5678::5678 => 2001:db8:1234:5678::
2001:db8:1234:5678:abcd:1234:ef10:5678 => 2001:db8:1234:5678::
2001:db8:1234:5678:4545:cdcd:6868:dada => 2001:db8:1234:5678::
2001:db8:abcd:2020:abcd:1234:ef10:5678 => 2001:db8:abcd:2020::