Hetzner experienced a major incident on October 19, 2026 affecting Network (vSwitch), lasting 1d 12h. The incident has been resolved; the full update timeline is below.
Affected components
Network (vSwitch)
Update timeline
- investigating Oct 20, 2026, 12:25 AM UTC
Delays in MAC learning within the vSwitch may occur. This can lead to packet loss if ARP/NDP requests are not answered in a timely manner.
- investigating Oct 20, 2026, 08:43 PM UTC
MAC address information may not be installed correctly after MAC updates on some network devices. As a result, MAC learning within a vSwitch can be delayed, and ARP/NDP requests may go unanswered, which can lead to packet loss between servers in the same vSwitch. We are aware of the impact and are working on it with high priority.