Encountering difficulties during in band network telemetry(INT)

I have been trying to test INT recently. I am using ONOS2.2.5, Ubuntu 20.04, and the Linux kernel is 4.15.0-154. When I start bmv2 demo. py, ONOS encounters the following error. How can I solve it?

I have not used ONOS before, so unfortunately cannot help you with that. There might be others on this forum that are familiar with ONOS, and may be able to answer your question.

If there are other public forums specializing in ONOS that are good for asking questions in, I do not know what those are, to recommend them. Again, maybe someone else reading this may know of other places to seek help with ONOS.

The one positive thing I can say is that if you search for ONOS on this site, there are several older posts asking about it. I have not read them to compare their questions to yours, to see if any of them address your question, but you might want to skim through a few of them to see if any of them address your question.

Okay, thank you for your help.