@ivanr-rs can you please verify if these changes work for you?
@tzaeschke is this enough log reduction?

Thanks for looking into this!
I tried it and the original warning has disappeared.
However, I now see a different warning:
[main] WARN org.xbill.DNS.hosts.HostsFileParser - Failed to parse entire hosts file /etc/hosts, address failures=3, name failures=0
It is an improvement in cases where there are multiple of our entries in the /etc/hosts file, otherwise it is just a different log message.
I would still prefer no warning at all, just like the JDK's or OS's own DNS resolver, if possible.

@tzaeschke I know that the log is still there, that was intentional, and I'm still not inclined to remove it. What I was wondering for few days now: why are you writing to /etc/hosts if only your software can parse those records?

@ibauersachs The central part of our project is a new routing protocol (essentially replacing BGP), see https://www.scion.org/. I am working on a Java client, and there are clients in other languages (Golang, Rust, ...). In the end, many applications on a machine, including possibly the kernel/OS itself, should use the new protocol. We support using a separate hosts file in /etc/scion/hosts, but it would be good to keep using the /etc/hosts, otherwise it may become more or less useless for any addresses outside the local network (local autonomous system), and we end up with two separate configuration files to specify host addresses.
To many, replacing BGP sounds like an impossible undertaking, but several ISPs (including British Telecom and all major Swiss ISPs) now support SCION. Also, the complete Swiss banking network has migrated to SCION. The reference implementations of all components are free open source owned by a non-profit organization.

Codecov Report

Attention: Patch coverage is 88.88889% with 7 lines in your changes missing coverage. Please review.

Project coverage is 66.20%. Comparing base (3efb25e) to head (60029c1).
Report is 2 commits behind head on master.

@@             Coverage Diff              @@
##             master     #371      +/-   ##
============================================
+ Coverage     66.14%   66.20%   +0.05%     
- Complexity     3026     3030       +4     
============================================
  Files           198      198              
  Lines         13544    13590      +46     
  Branches       2109     2114       +5     
============================================
+ Hits           8959     8997      +38     
- Misses         4030     4032       +2     
- Partials        555      561       +6     

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Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
88.9% Coverage on New Code
0.0% Duplication on New Code

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