More an more lately, across multiple Clients I support, I am seeing issues with devices connected to Meraki Switches running L3. Most cases, I'm noticing that devices can't communicate beyond the L3 interface on the core switch. They can ping things on the same vlan, even their default gateways, but not beyond. Reboots of the device, the Meraki switch or even the local firewall don't work, but if I readdress the device to a different IP, it works fine. When I go back to the original IP the problem returns. There's no duplicate IP. I can confirm the ARP table reflects only 1 MAC with the IP (no duplicate IPs, and of course when I readdress, the original IP is no longer pingable. This all started appearing a few months ago. I have a ticket open with Meraki support, but they are stumped too.