This is often a source of confusion.
The node name is the full name. You can’t split it up in a name and hostname/ip. If you named your node node1@192.168.1.186 then you must use the full name to connect. You can’t replace 192.168.1.186 with another IP to the same host or to a hostname. I don’t know why it was designed this way.
If you must connect to a node using different IP addresses you need to setup DNS and have it resolve differently. And the DNS needs to be FQDN (which is not quite true, but it must have a dot in the name)
