On Debian Bullseye:
[email protected]# ethtool -g eth0 Ring parameters for eth0: Pre-set maximums: RX: 4096 RX Mini: n/a RX Jumbo: n/a TX: 4096 Current hardware settings: RX: 256 RX Mini: n/a RX Jumbo: n/a TX: 256
vs
Debian Buster (both on an APU4 board)
[email protected]:~$ ethtool -g eth0 Ring parameters for eth0: Pre-set maximums: RX: 4096 RX Mini: 0 RX Jumbo: 0 TX: 4096 Current hardware settings: RX: 256 RX Mini: 0 RX Jumbo: 0 TX: 256