macOS Monterey Guest and network -> host macOS Firewall stealth mode

Hey,
FYI:

I am having Apple Silicon M1 macOS Monterey 12.0.1 as Host system. Using Parallels 17.1.0 (51516) I installed a GUEST: macOS Montery 12.0.1
On the guest system, the network (i.e. to internet) ONLY works if I either disable the "stealth-mode" in the macOS-host's firewall or disable it. (The macOS-guest Firewall is turned off.)

Seems to be a bug?! @Parallels Team

Best regards

 

FYI: This is not listed as limitation in https://kb.parallels.com/125561