TX2 udp-rx loss packets

I am using tx2.
Using ubuntu16.04 network transmission(udp rx) does not lose packets.
But after upgrading to jetpack 4.2(ubuntu 18.04), the network has a lot of packet loss, how to optimize?
Try using ethtool to modify the receive buffer size (sudo ethtool -G eth0 rx 2048) and display “cannot get device ring settings:operation not supported”