We have 1 floating IP network (CIDR) in each openstack deployment:
* 185.15.56.0/25 -- eqiad1. Zone `56.15.185.in-addr.arpa.` owned by designate @ eqiad1
* 185.15.57.0/29 -- codfw1dev. Zone `57.15.185.in-addr.arpa` owned by prod DNS servers.
In markmonitor:
```lang=shell-session
arturo@endurance:~ $ whois 57.15.185.in-addr.arpa | grep "nserver"
nserver: ns0.wikimedia.org
nserver: ns1.wikimedia.org
nserver: ns2.wikimedia.org
arturo@endurance:~ $ whois 56.15.185.in-addr.arpa | grep "nserver"
nserver: cloud-ns0.wikimedia.org
nserver: cloud-ns1.wikimedia.org
```
This is inconsistent. Probably the right thing to do is to delegate the /29 in codfw to designate @ codw1dev and update markmonitor.
The `nserver` entry requires also an update to `ns[0-1].openstack.<deployment>.wikimediacloud.org`, similar to what is happening in {T247971}.