I use IRC a lot for talking about and getting/giving support for FOSS.

## The Problem

Every once in a while people are asked to paste logs, configs, output, … and some people feel a need to obfuscate certain information like IP(-Range)s, domain names, usernames, … but all too often fail at that for some reason from the point of view of the one giving support.


## Possible Fails

### Inconsistency

Fail: Replacing a certain bit of information differently in different places or missing occurences

Example: bob@example.com becomes foo@example.org in one place, foo@example.com in another, and stays bob@example.com in a third


## References

* [RFC 2606: BCP 32 – Reserved Top Level DNS Names](https://datatracker.ietf.org/doc/html/rfc2606)
* [RFC 5737: IPv4 Address Blocks Reserved for Documentation](https://datatracker.ietf.org/doc/html/rfc5737)