Disconnecting Internet to VRM causes interrupt datatransfer to victrongrafana.

My Cerbo GX is via ethernet connected to VRM and from the same switch I receive data to victrongrafana. When I cut the internet connection to VRM the influxdb stops getting dataafter 16-23 hours after disconnecting the internet. After reconnect the internet VRM and (mostly) inflxdb gets data again. With an installation with a color control I didn't had this problem. May the proplem belongs to the wifi-configuration which I don't need and is different to my color control installation?

I run the victrongrafana installation in docker on a raspberry and also on a QNAP TS-253D without problems combiened with the color control.