[Bug 247036] net-mgmt/collectd5:network plugin: getnameinfo failed: Non-recoverable failure in name resolution

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=247036

            Bug ID: 247036
           Summary: net-mgmt/collectd5:network plugin: getnameinfo failed:
                    Non-recoverable failure in name resolution
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: ports-bugs at FreeBSD.org
          Reporter: fabian at wenks.ch
                CC: ports at bsdserwis.com
                CC: ports at bsdserwis.com
             Flags: maintainer-feedback?(ports at bsdserwis.com)

When collectd is also setup to listen for stats from other servers and clients
send their data, then the following lines is logged and data are not collected
any more:
network plugin: getnameinfo failed: Non-recoverable failure in name resolution

Same configuration works just fine with collectd5-5.10.0_1, but fails with
collectd5-5.11.0 / collectd5-5.11.0_1.

I traced it down to this change in 5.11.0:
Network plugin: New metadata "network:ip_address" has been added. Thanks to
Takuro Ashie. #3191 [1]

 [1] https://github.com/collectd/collectd/pull/3191

The error message does suggest that resolving does not work, but all the
systems which send data to my servers have proper PTR entries in DNS and do
resolve from IP to hostname and hostname to IP.

I did revert that change in src/network.c and collectd 5.11.0 is working again
with collecting data from other servers.

See also bug report #3477 [2] upstream.

  [2] https://github.com/collectd/collectd/issues/3477

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