Using El Alto and a single node KUD cluster running in a VM, it has been observed that the VPP based packet generator does not stick to the configured packet rate.  After being configured via honeycomb - to a different value than current config - it sticks to the rate for awhile, then suddenly jumps up to a very high packet rate.

Using the following bash loop to monitor packet stats from inside the packet generator virtlet, the following was seen.  At some point after starting, the configuratoin was changed to 1 active stream.  behavior matched for a while then reverted to a high value.

root@profile1-packetgen-6566674494-lvr2j:/opt# while true; do echo `vppctl show int tap-0 | grep "tx packets" | col | cut -f 8` - `sleep 10; vppctl show int tap-0 | grep "tx packets" | col | cut -f 8` | bc; done
-6358016
-6283008
-6193932
-6463728
-6401808
-6334200
-6426636
-6208272
-4249115
-101
-101
-102
-101
-101
-101
-102
-102
-100
-101
-101
-101
-101
-101
-101
-102
-102
-101
-101
-101
-101
-101
-101
-101
-101
-101
-101
-101
-101
-101
-101
-101
-6557469
-6546696
-6424576
-6658048
-6654712