What causes sudden DNS resolution failures on Cloudflare 1.1.1.1 when using a CenturyLink PPPoE fiber connection?
Download run
Fan-out diagram
The searches the AI actually ran for this prompt.
SEED QUERY
What causes sudden DNS resolution failures on Cloudflare 1.1.1.1 when using a CenturyLink PPPoE fiber connection?
3 real searches · 1 real-search pass
Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.
Query classes
Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.
ChatGPT real searches (3)
Classes come from the query-classifier (a local Laya model). 2 of 3 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.
Searches and sources
ChatGPT3 real searches · gpt-6
CenturyLink PPPoE Cloudflare 1.1.1.1 DNS intermittent failures MTU IPv6 routing Google ↗
CenturyLink PPPoE MTU 1492 DNS fragmentation troubleshooting Google ↗
Cloudflare 1.1.1.1 troubleshooting DNS UDP TCP 53 IPv6 Google ↗
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- How to Find the Optimal MTU Size for Your Network · tp-link.com
- Troubleshooting MTU Issues · documentation.meraki.com
- Cloudflare 1.1.1.1 incident on June 27, 2024 · blog.cloudflare.com
- Cloudflare 1.1.1.1 Incident on July 14, 2025 · blog.cloudflare.com
- Troubleshooting DNS Resolver · developers.cloudflare.com
Queries
3 queries · click a column to sort
| Query / type | Search | Intent | Query class | Routing format | Cluster | Freq ↓ | Weight |
|---|---|---|---|---|---|---|---|
CenturyLink PPPoE Cloudflare 1.1.1.1 DNS intermittent failures MTU IPv6 routing OBSERVED | Google ↗ AI Mode ↗ | — | Reason | — | — | 1x of 1 | |
CenturyLink PPPoE MTU 1492 DNS fragmentation troubleshooting OBSERVED | Google ↗ AI Mode ↗ | — | Reason | — | — | 1x of 1 | |
Cloudflare 1.1.1.1 troubleshooting DNS UDP TCP 53 IPv6 OBSERVED | Google ↗ AI Mode ↗ | — | Reason | — | — | 1x of 1 |