Linux/AM5708: PRP tag missing in a custom AM5708 based board

Part Number:AM5708

Tool/software: Linux

Hello:

   I have a custom AM5708 based board. I have an ethernet board with 2 ports connected to PRU2 and have configured them to work in PRP mode, so I setup it as follow:

          ifconfig eth2 0.0.0.0 down
          ifconfig eth3 0.0.0.0 down
          ifconfig eth2 hw ether 70:FF:76:1C:0E:8C
          ifconfig eth3 hw ether 70:FF:76:1C:0E:8C
          ethtool -K eth2 prp-rx-offload on
          ethtool -K eth3 prp-rx-offload on
          ifconfig eth2 up
          ifconfig eth3 up
         ip link add name prp0 type prp slave1 eth2 slave2 eth3 supervision 45
         ifconfig hsr0 192.168.35.20

I can ping from both ports to a remote PC.

I sniffed the ethernet frames with wireshark and can see the supervision frames with their PRP tags but

the ping frames don´t have attached these tags.

Regards

Billa