not ok 6 - simult_flows: unbalanced bwidth - reverse direction

not ok 1 test: selftest_simult_flows # FAIL
# 01 balanced bwidth                                             7394 max 7906       [ OK ]
# 02 balanced bwidth - reverse direction                         7405 max 7906       [ OK ]
# 03 balanced bwidth with unbalanced delay                       7559 max 7906       [ OK ]
# 04 balanced bwidth with unbalanced delay - reverse direction   7523 max 7906       [ OK ]
# 05 unbalanced bwidth                                           7457 max 7906       [ OK ]
# 06 unbalanced bwidth - reverse direction                       transfer slower than expected! runtime 8225 ms, expected 7906 ms max 7906       [FAIL]
# client exit code 0, server 1
# 
# netns ns3-6633969d-0RwXf5 socket stat for 10006:
# State     Recv-Q Send-Q Local Address:Port  Peer Address:Port                            
# TIME-WAIT 0      0           10.0.3.3:10006     10.0.1.1:48156 timer:(timewait,59sec,0)
# ^I
# TIME-WAIT 0      0           10.0.3.3:10006     10.0.2.1:41607 timer:(timewait,59sec,0)
# ^I
# 
# netns ns1-6633969d-0RwXf5 socket stat for 10006:
# State Recv-Q Send-Q Local Address:Port Peer Address:Port
# -rw------- 1 root root 81920 May  2 13:35 /tmp/tmp.KAe0AFFibh
# -rw------- 1 root root 81920 May  2 13:36 /tmp/tmp.TsjSX3cMgg
# -rw------- 1 root root 16777216 May  2 13:35 /tmp/tmp.CtNymqiPDS
# -rw------- 1 root root 16777216 May  2 13:36 /tmp/tmp.gn1zwutDNX
# 07 unbalanced bwidth with unbalanced delay                     7462 max 7906       [ OK ]
# 08 unbalanced bwidth with unbalanced delay - reverse direction 7502 max 7906       [ OK ]
# 09 unbalanced bwidth with opposed, unbalanced delay            7752 max 7906       [ OK ]
# 10 unbalanced bwidth with opposed, unbalanced delay - reverse direction7607 max 7906       [ OK ]
# 
# time=81