Steve Rowe commented on LUCENE-7920:

FYI, UAX29URLEmailTokenizerImpl.jflex does IP parsing.
bq. True, but I think it only does recognition, correct? To "parse" in this 
case means going to a byte[] and involves ipv6 address decompression and other 


> Make it easier to create ip prefix queries
> ------------------------------------------
>                 Key: LUCENE-7920
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7920
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Adrien Grand
>            Priority: Minor
>         Attachments: LUCENE-7920.patch
> {{InetAddress.getByAddress}} automatically transforms ipv6-mapped ipv4 
> addresses to ipv4 addresses. While this is usually desirable, it can make ip 
> prefix query a bit trappy. For instance the following code:
> {code}
> InetAddressPoint.newPrefixQuery("a", InetAddress.getByName("::ffff:0:0"), 96);
> {code}
> throws an IAE complaining that the prefix length is invalid: {{illegal 
> prefixLength '96'. Must be 0-32 for IPv4 ranges, 0-128 for IPv6 ranges}}.

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