I see in the rack logs that the same call fails with
```
2023-07-31 23:07:35 provisioningserver.rpc.clusterservice: [critical] Failed to contact region. (While requesting RPC info at http://10.217.0.11:5240/MAAS/, http://10.217.0.66:5240/MAAS/).
...
response = yield self._fetch_rpc_info(url, orig_url)
twisted.internet.error.DNSLookupError: DNS lookup failed: Couldn't find the hostname '10.217.0.11'.
```
and
```
2023-07-31 23:09:50 provisioningserver.rpc.clusterservice: [critical] Failed to contact region. (While requesting RPC info at http://10.217.0.11:5240/MAAS/, http://10.217.0.66:5240/MAAS/).
...
response = yield self._fetch_rpc_info(url, orig_url)
twisted.web._newclient.ResponseNeverReceived: [<twisted.python.failure.Failure twisted.internet.defer.CancelledError: >]
```
I see in the rack logs that the same call fails with ver.rpc. clusterservice: [critical] Failed to contact region. (While requesting RPC info at http:// 10.217. 0.11:5240/ MAAS/, http:// 10.217. 0.66:5240/ MAAS/). rpc_info( url, orig_url) internet. error.DNSLookup Error: DNS lookup failed: Couldn't find the hostname '10.217.0.11'.
```
2023-07-31 23:07:35 provisioningser
...
response = yield self._fetch_
twisted.
```
and
``` ver.rpc. clusterservice: [critical] Failed to contact region. (While requesting RPC info at http:// 10.217. 0.11:5240/ MAAS/, http:// 10.217. 0.66:5240/ MAAS/). rpc_info( url, orig_url) web._newclient. ResponseNeverRe ceived: [<twisted. python. failure. Failure twisted. internet. defer.Cancelled Error: >]
2023-07-31 23:09:50 provisioningser
...
response = yield self._fetch_
twisted.
```
a lot of times.