Question about the Mobile Endpoint behaviors of SRv6 in VPP

[velvetThunder-23]

I am trying to experiment with the mobile endpoint behaviors specifically END.M.GTP6.E, END.M.GTP6.D and END.DT6, I have followed the steps listed in the file "runner.py" and have encountered 2 issues:

• The packet structure matches the headers shown in "runner.py" but upon giving the command "sh sr localsid" for behavior END.M.GTP6.D, it does not pick up the traffic, when the headers are altered or incorrect the "bad traffic" counter is incremented.
• The behavior END.M.GTP6.E is not correctly converting the IPv6 packets to GTP-U packets. UDP checksum error is thrown when packets are captured on wireshark.

I need to know whether there are some additional caveats that are not mentioned in this repository for the proper functioning of these behaviors.