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Fly.io: IPv6 Networking Issues in DFW
Fly.io reported a major IPv6 connectivity incident affecting a subset of hosts in DFW, starting 2026-09-23 06:18 UTC and resolved at 2026-09-23 12:15 UTC, lasting 5 h 57 min. Machines on affected hosts could experience inbound/outbound IPv6 issues; IPv4 was unaffected. Fly.io identified regional maintenance by an upstream internet transit provider.
Machine-written from the archived incident (Sol). Check the timeline before relying on it.
Affected components: DFW - Dallas, Texas (US)
Timeline of updates
- investigating
We are investigating IPv6 connectivity issues on a subset of hosts in DFW region. Machines on impacted hosts may see inbound/outbound connectivity issues over IPv6. IPv4 connectivity is not impacted.
- identified
One of the internet transit providers upstream of the affected hosts is performing regional maintenance, which is expected to complete at 10:00AM UTC. IPv6 connectivity to and from destinations using that transit may be impacted during this time window.
- identified
We are continuing to work on a fix for this issue.
- resolved
This incident has been resolved.
Rewindex changes for this incident
- Major incident: IPv6 Networking Issues in DFW 2026-09-23 06:18 UTC
Impact, status and times are the vendor’s own, as last archived. View on status.flyio.net (opens in new tab). Fly.io profile · Recent Fly.io incidents · Markdown · JSON