Problem connecting to Meraki Client VPN

[smccloud]

Hello,

Where I work we use a Meraki MX64 firewall and our VPN access is through their client VPN.  Happens to be L2TP/IPSec.  It worked fine until I switched to OPNsense.  From what I can see nothing is being blocked (I did add a rule to allow anything from the public IP I connect to back into my firewall).

Nothing is being blocked outbound that I can see either.  Any suggestions on what to look at in order to get this working (other than deploying the OpenVPN appliance at work so I can connect using that instead).