After monitoring for a while, it seems the issue is now resolved.
ZRH1: Connectivity issues to certain networks
We are still monitoring and make sure everything is back to normal.
Equinix has found and fixed the issue. The traffic is back to the normal path.
We are still waiting for a feedback from Equinix
Meanwhile traffic is re-routed, so there should be no impact.
Equinix has acknowledged the issue and are investigating on their side, but they need a bot of time
A ticket has been opened with Equinix to investigate the issue
The traffic to the Equinix MLPE connected network is re-routed. This is due to some connectivity issues with Equinix.