In the devtools tenant, we have a couple instance that lack DNS entries:
| doc1002.devtools.eqiad.wmflabs | 172.16.1.5 | https://horizon.wikimedia.org/project/instances/23159e5b-074d-4a08-9f3f-91263aa142b2/ |
| doc.devtools.eqiad.wmflabs | 172.16.1.241 | https://horizon.wikimedia.org/project/instances/c63565b7-607d-4d0c-900d-0d15f85074fa/ |
The later has a webproxy and does respond: https://doc-stage.wmcloud.org
Doing queries from bastion.wmflabs.org show that the instances do not have DNS entries set!
$ dig +short doc1002.devtools.eqiad.wmflabs $ dig +short doc.devtools.eqiad.wmflabs $
Which makes them a bit cumbersome to reach them over ssh when using a Host *.eqiad.wmflabs rule.
Other instances in the project have DNS entries.