not ok 6 - simult_flows: unbalanced bwidth - reverse direction

not ok 1 test: selftest_simult_flows # FAIL
# 01 balanced bwidth                                             7408 max 7906       [ OK ]
# 02 balanced bwidth - reverse direction                         7382 max 7906       [ OK ]
# 03 balanced bwidth with unbalanced delay                       7568 max 7906       [ OK ]
# 04 balanced bwidth with unbalanced delay - reverse direction   7557 max 7906       [ OK ]
# 05 unbalanced bwidth                                           7372 max 7906       [ OK ]
# 06 unbalanced bwidth - reverse direction                       transfer slower than expected! runtime 8057 ms, expected 7906 ms max 7906       [FAIL]
# client exit code 0, server 1
# 
# netns ns3-6647a138-VfscET socket stat for 10006:
# State     Recv-Q Send-Q Local Address:Port  Peer Address:Port                            
# TIME-WAIT 0      0           10.0.3.3:10006     10.0.2.1:40267 timer:(timewait,59sec,0)
# ^I
# TIME-WAIT 0      0           10.0.3.3:10006     10.0.1.1:36960 timer:(timewait,59sec,0)
# ^I
# 
# netns ns1-6647a138-VfscET socket stat for 10006:
# State Recv-Q Send-Q Local Address:Port Peer Address:Port
# -rw------- 1 root root 81920 May 17 18:26 /tmp/tmp.Tar5uLgEMx
# -rw------- 1 root root 81920 May 17 18:26 /tmp/tmp.rY5adiWuSr
# -rw------- 1 root root 16777216 May 17 18:26 /tmp/tmp.j23t0NRttn
# -rw------- 1 root root 16777216 May 17 18:26 /tmp/tmp.qDLRc50GFK
# 07 unbalanced bwidth with unbalanced delay                     7485 max 7906       [ OK ]
# 08 unbalanced bwidth with unbalanced delay - reverse direction 7459 max 7906       [ OK ]
# 09 unbalanced bwidth with opposed, unbalanced delay            7740 max 7906       [ OK ]
# 10 unbalanced bwidth with opposed, unbalanced delay - reverse direction7621 max 7906       [ OK ]
# 
# time=80