UDP6 checksum problem on LTM

Hello All, I'm working on a issue where the UDP v6 packets from the server to LB with checksum value is getting changed.

 

Did a packet capture of v6 egress packet from the server and seeing the UDP packets are with the checksum value and when I checked the same packet on F5 LTM the UDP v6 packet is with the checksum value of 000

 

Then if I re-initate the session from the LB by delete the existing session then I'm finding the checksum valiu in the response packet from the server.

 

Could anyone provide some clue on how to address the IP v6 UDP checksum issue?

 

Thanks a lot in advance.

 

Regards, Thiyagu