we recently updated our test Firewall from 3.4.0 to 3.7.1 and upgraded to the newest kernel 4.9.27-ZS-64.
To our surprise QoS is now treating all packages as default class.
Our configuration did not change during the update and is identical to our production environment.
Things we already did:
booting with the 32 bit 4.9.27 kernel
booting with the old 4.4.39 kernel
comparing our classifiers with our active firewall
make sure QoS is enabled on all interfaces
Any insights on this issue would be highly appreciated.