Model: MR1100 as modem only for Meraki MX ?

Hello,

i read many topics, but no success.

Can we use the M1 on WAN2 from a Meraki MX65 as a failover "LTE Modem" ?

We want wo buy this M1 with a LTE card with static IP.
So we want to use it as failover LTE Modem on WAN2 and continue using our internal Firewall rules in meraki.

Can the M1 keep a active Connection on the LAN Port?

Does anyone have a similar setup ?

Thank you very much