Why your cloud monitoring is blind to IPv6 blackholes (and how to fix it)

Cloud monitoring often fails due to IPv6 blackholes, where checkers prioritize AAAA records over IPv4, causing false downtime alerts despite active services. This occurs when routes exist but drop packets, leading to timeouts. Separately, self-hosted n8n 2.44.6 users may experience Gmail Trigger failures where production remains quiet despite green editor status. The Gmail Trigger polls Gmail at set intervals to return new messages matching filters, rather than utilizing push webhooks from Google.