Comment 1 for bug 1853375

This issue can be found on Bionic s390x/amd64 as well:

Test report on s390x zVM (kernel02):
selftests: run_afpackettests
========================================
--------------------
running psock_fanout test
--------------------
test: control single socket
test: control multiple sockets
test: unique ids
test: datapath 0x0
info: count=0,0, expect=0,0
info: count=20,0, expect=15,5
ERROR: incorrect queue lengths
info: count=20,0, expect=20,5
ERROR: incorrect queue lengths
info: trying alternate ports (4)
test: datapath 0x0
info: count=0,0, expect=0,0
info: count=20,0, expect=15,5
ERROR: incorrect queue lengths
info: count=20,0, expect=20,5
ERROR: incorrect queue lengths
info: trying alternate ports (3)
test: datapath 0x0
info: count=0,0, expect=0,0
info: count=15,5, expect=15,5
info: count=20,5, expect=20,5
test: datapath 0x1000
info: count=0,0, expect=0,0
info: count=15,5, expect=15,5
info: count=20,15, expect=20,15
test: datapath 0x1
info: count=0,0, expect=0,0
info: count=10,10, expect=10,10
info: count=18,17, expect=18,17
test: datapath 0x3
info: count=0,0, expect=0,0
info: count=15,5, expect=15,5
info: count=20,15, expect=20,15
test: datapath 0x6
info: count=0,0, expect=0,0
info: count=5,15, expect=15,5
info: count=20,15, expect=15,20
test: datapath 0x7
info: count=0,0, expect=0,0
info: count=5,15, expect=15,5
info: count=20,15, expect=15,20
test: datapath 0x2
info: count=0,0, expect=0,0
info: count=20,0, expect=20,0
info: count=20,0, expect=20,0
test: datapath 0x2
info: count=0,0, expect=0,0
info: count=0,20, expect=0,20
info: count=0,20, expect=0,20
test: datapath 0x2000
info: count=0,0, expect=0,0
info: count=20,20, expect=20,20
info: count=20,20, expect=20,20