Traffic with other than 0 pbit, not getting parsed

Steps to reproduce -
1. Install mausezahn traffic generator on RG
2. From RG, send traffic/frames to BNG using below command
mausezahn (interface) -A (src_ip) -B (dst_ip) -c 0 -t udp "dp=9999" -p 1472 -Q 0:0 -a (src_mac) -b (dst_mac)
3. Using tcpdump at BNG, check if getting any traffic or not (It will work fine here, as sent traffic with 0 pbit)
4. Now repeat step2 for different pbit using below command
mausezahn (interface) -A (src_ip) -B (dst_ip) -c 0 -t udp "dp=9999" -p 1472 -Q 1:0 -a (src_mac) -b (dst_mac)
5. Repeat step3 (Will not get any traffic activity here)

Have tried above steps with 1-gem tech profile as well as with 4-gem tech profile, no luck.

Please let me know in case anything else is requried. Thanks.