When I add something like this to my /etc/hosts file (Ubuntu 22):

71-2:0:4a,[127.0.0.1] myhost

I get a warning:

[main] WARN org.xbill.DNS.hosts.HostsFileParser - Could not decode address 71-2:0:4a,127.0.0.1], /etc/hosts#L9

I am not aware of any other library that emits a warning if it can't read the /etc/hosts file,

I can of course configure slf4j to suppress the warning, but I am a library developer myself and I don´t think I should bundle a simplelogger.properties or similar with my library.

Could this WARNING be changed to INFO or DEBUG level?