Behavior

If I specify then telemetry --name flag with any value including a period, such as .notadomain, the value prevents the substrate server from starting. Skimming the source didn't indicate to me if this is intentional.

Expectation

I could specify any value containing a period, including a domain name, as the --name flag.
or
I would receive a less ambiguous error indicating that the telemetry name for a node cannot contain a period and any other restrictions.

Replication

substrate binary

docker run parity/substrate:latest --name="test.com"
# ....other logs
# Error: InvalidListenMultiaddress

Also affects polkadot

docker run parity/polkadot:latest --name="test.com"
# Error: InvalidListenMultiaddress