Critical Issue
Description
Due to a problem with the IP Cores listed above, oversized frames are incorrectly reported to VLAN/Stacked VLAN tagged frames when all conditions below are met:
VLAN frame
- VLAN Detection is enabled
- Sending/receiving frame length is between the maximum TX/RX frame length plus 1 to 4 octets
Stacked VLAN frame
- VLAN Detection is enabled
- Sending/receiving frame length is between the maximum TX/RX frame length plus 1 to 8 octets
Resolution
No workaround for this problem exists in current releases of the IP.
This problem is fixed beginning with the Intel® Quartus® Prime Pro Edition software version 20.4.