I wonder if the cellular connection on integrated 4G modems (MX67/68) is always up and has an IP address assigned, even if 4G backup is on standby?
Background is IPv4 ressource usage as it would make a difference if thousands of networks with 4G backup in standby would have an address assigne 24/7 or only in case of primary WAN failure/active 4G backup.
Thanks in advance!
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As far as I am aware, once the internal modem creates a connection and grabs an IP, it stays active. I would imagine over time it might eventually do a release/renew and grab a new IP
The 4G connection remains down until their are no working WAN circuits. At that point in time the connection gets brought up.