Integration failed after Opennebula restart

After the Opennebula restart on 08.04.2020, https://testresults.qt.io/coin/integration/qt/qtbase/tasks/1586346230 failed with a routing error:

Coin failed to acquire a virtual machine, re-staging is unlikely to help, please contact the admins: 'AgentException: 'Failed repeatedly to launch build/test agent' reasons: [[Errno 113] No route to host; [Errno 113] No route to host; [Errno 113] No route to host; [Errno 113] No route to host; [Errno 113] No route to host; [Errno 113] No route to host; [Errno 113] No route to host]'