Hi EamonnT,
My apologies for the delay as I was out on holiday.
You did not mention if you are leveraging our Meraki MR product line of wireless APs but if you are, be sure to check and confirm that we are not blocking layer 3 traffic destined for the "Local LAN" by navigating to Wireless > Firewall & traffic shaping from your Meraki Dashboard portal. Then be sure to select the SSID(s) in question from the SSID drop-down menu and see if the first rule in the "Outbound rules" section is set to "Allow" (Destination: Local LAN).
You can read more about how this rule is intended to work at the following Meraki resource:
https://documentation.meraki.com/MR/Firewall_and_Traffic_Shaping/'Deny_Local_LAN'_settings_in_Cisco_...
If this is already set to "Allow" for the Local LAN destination, my recommendation here would be to contact our 24/7 Enterprise Support for further troubleshooting. You can view these options by navigating to Help / (Question Mark icon) > Get help from your Meraki Dashboard portal, selecting the "Still need help?" link, and then calling the Meraki Support Team or submitting an email case.
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