I haven't seen those specific alerts, but we are seeing other new ids alerts that started a couple of days ago. Our source and destination were all internal (esxi server to specific vm mostly). I called Meraki support and was told that snort updated and is now tagging incoming and outgoing traffic, rather than just incoming traffic. They said that they have received other calls about similar alerts and that after confirming that the traffic is legitimate, I can whitelist the alerts. I'm not sure how accurate that is but we for sure are seeing new alerts for internal traffic.
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