Separate names with a comma.
Oh, BTW there is a typo in the dkms.conf file (missing a quote on the first line): /usr/lib/parallels-tools/kmods/dkms.conf: line 34: unexpected...
I got this working on Oracle Linux 9 & Parallels 20.2.0.55872 The issue for us is as follows: Confirmed fix for EL 8. Regarding EL 9: My team...