Try the newest 15 series beta, seems to nearly resolve this. I say nearly as the stop passing traffic problem still happens, but instead of days or hours, its not weeks or months. The 15 series if you read the changelog is a complete redo of third party VPN technology. In the 15 series of firmware, I guess there is IKE2 support, but it needs to be enabled from the backend by Meraki support at this time. We have not tried this yet, but I feel it may permanently solve it.
... View more