Alternate addresses configuration dissapear shortly after being defined

Hi,

I have a Couchbase cluster (7.0.4) in a EKS K8s cluster (1.24).
I opened the alternate addresses for a kv port using:

curl -v -X PUT -u $usr:$pwd https://<...>/node/controller/setupAlternateAddresses/external -d hostname=<...>  -d kv=11210

Right after, I check the /pools/default/nodeServices and there it is. But after a little while that configuration disappears, and further queries to /pools/default/nodeServices don’t show the alternateAddresses field anymore.

Does anyone know why that happens? Is this changes being reverted?
Thanks.

Regards,

Manuel