{"id":"INC-cloudflare-3bv9locsg7ln","kind":"incident","aliases":[],"related":[],"title":"Cloudflare: Cloudflare Gateway DNS-over-TLS Connectivity Issues over IPv4","description":"Cloudflare is investigating an issue affecting Cloudflare Gateway DNS-over-TLS (DoT) connections over IPv4. Affected customers may experience connection timeouts and failed DNS resolution.\n\nThis issue is limited to DoT over IPv4. DoT over IPv6, DNS-over-HTTPS (DoH), and standard DNS over UDP/TCP are not affected.\n\nWe are working to identify the cause and restore connectivity. Further updates will be provided as more information becomes available.","summary":null,"severity":"medium","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Cloudflare","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["cdn","cloudflare","dns","incident","ops","vendor"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-02T22:12:39+00:00","first_seen_at":"2026-11-02T22:14:00+00:00","triaged_at":"2026-11-02T22:14:41+00:00","updated_at":"2026-11-02T22:22:28+00:00","category":"vendor","confidence":null,"triage":null,"analyst_status":null,"analyst_note":null,"search":"'3bv9locsg7ln':15A 'affect':28C,39C,72C 'avail':92C 'becom':91C 'caus':79C 'cdn':17B 'cloudflar':1A,2A,18B,23C,29C 'cloudflare':14A,16A 'connect':8A,36C,43C,82C 'custom':40C 'dns':5A,19B,32C,47C,61C,67C 'dns-over-http':60C 'dns-over-tl':4A,31C 'doh':64C 'dot':35C,54C,57C 'experi':42C 'fail':46C 'gateway':3A,30C 'https':63C 'identifi':77C 'inc':13A 'inc-cloudflare-3bv9locsg7ln':12A 'incid':20B 'inform':90C 'investig':25C 'ipv4':11A,38C,56C 'ipv6':59C 'issu':9A,27C,50C 'limit':52C 'may':41C 'op':21B 'provid':87C 'resolut':48C 'restor':81C 'standard':66C 'timeout':44C 'tls':7A,34C 'udp/tcp':69C 'updat':84C 'vendor':22B 'work':75C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":null,"audience":null,"plain_action":null,"pkeys":["cloudflare"],"ptokens":["cloudflare"],"labels":["cdn","cloudflare","dns","incident","medium","ops","vendor"],"first_public_at":"2026-11-02T22:12:39+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"statuspage","external_id":"cloudflare:3bv9locsg7ln","url":"https://www.cloudflarestatus.com/incidents/3bv9locsg7ln","severity":"medium","published_at":"2026-11-02T22:12:39+00:00","modified_at":"2026-11-02T22:13:03+00:00","first_seen_at":"2026-11-02T22:14:00+00:00","fetched_at":"2026-11-02T23:56:09+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}