Reports are showing IP addresses instead of hostnames after upgrading to 4.1

[Jaci]

We have a report that provides a nightly email alert with inline results for every successful backup event.

Ever since we upgraded to 4.1 from 4.x, the reports are showing the IP address instead of the hostname.

Did something change in 4.1? And how can I fix this?

[Lowell]

Are you using an udp input?

Try adding connection_host = dns to your UDP input stanza.

See the following post: Lookups - using them to replace the host field

[gkanapathy · Accepted solution]

i'm assuming the data is syslog directly to a Splunk UDP port, and it's because by default we don't resolve IP addresses on a UDP port any more. connection_host in inputs.conf will reset it though.

[Jaci]

Yes, thank you for the answer!