Hi Jiri,
Thanks for your quick reply. After days of investigations, I finally managed to reproduce the same issue in a repeatable manner.
It seems once the number of TX-OK exceeds ~2,157,000,000 in teamed interface. TX-DRP will start happening in that particular interface. And reset the teamed interface (ifdown/ifup to reset the TX-OK back to 0) seems to resolve the issue temporarily. I've been able to recreate the same issue multiple times in different machines (all are RHEL 7.2, libteam 1.17). And in all machines, the TX-DRP is only observed in teamed interface, no TX-DRP in underlying interfaces.
Please see the following `netstat -i` results I collected from different machines:
Iface MTU RX-OK ERR DRP OVR TX-OK ERR DRP OVR Flg
team0@ip1 1500 2132803208 0 0 0 2159140094 0 67630 0 BMRU
team0@ip2 1500 2143255069 0 0 0 2157767058 0 49719 0 BMRU
team0@ip3 1500 2131552843 0 0 0 2157853127 0 1754 0 BMRU
team0@ip4 1500 2137758098 0 0 0 2158602342 0 1027 0 BMRU
Regards,
Liang