Is it normal to put a machine's own network IP's into /etc/hosts ? I've never seen it done before, and i'm pretty sure it's a bad idea...
There's a cultural habit here of /etc/hosts files that look like this:
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 18.104.22.168 servername.domain.com servername
Surely this isn't the right thing to do? The last time this tripped me up was today with SRV records for a pair of freeipa servers.
edit: edited for a little clarity