==== run-tcpbench6-3-1 ====
rm -f nc.log
nc -6 -v -l -V 41 fc00:0:0:1::41 12345 >/dev/null 2>nc.log &
# Wait until nc is listening.
for  i in `jot 30`; do if fgrep -q Listening nc.log; then break; fi; sleep .1; done
fgrep Listening nc.log
Listening on fc00:0:0:1::41 12345
# Test that path MTU dicovery is working.
tcpbench -6 -t 5 -V 43 -b fc00::43 fc00:0:0:1::41
  elapsed_ms          bytes         mbps   bwidth 
        1001      209242120     1672.265  100.00% 
Conn:   1 Mbps:     1672.265 Peak Mbps:     1672.265 Avg Mbps:     1672.265
        2001      187257624     1498.061  100.00% 
Conn:   1 Mbps:     1498.061 Peak Mbps:     1672.265 Avg Mbps:     1498.061
        3002      172328808     1378.630  100.00% 
Conn:   1 Mbps:     1378.630 Peak Mbps:     1672.265 Avg Mbps:     1378.630
        4002      181204344     1449.635  100.00% 
Conn:   1 Mbps:     1449.635 Peak Mbps:     1672.265 Avg Mbps:     1449.635
        5002      186656856     1494.750  100.00% 
Conn:   1 Mbps:     1494.750 Peak Mbps:     1672.265 Avg Mbps:     1494.750
--- fc00:0:0:1::41 tcpbench statistics ---
1188881328 bytes sent over 6.001 seconds
bandwidth min/avg/max/std-dev = 1378.630/1498.668/1672.265/96.917 Mbps
# path MTU discovery in other rtable does not work in ip6_output()
/sbin/route -T 43 -n get -host -inet6 fc00:0:0:1::41
   route to: fc00:0:0:1::41
destination: fc00::
       mask: ffff:ffff:ffff::
    gateway: ::1
  interface: lo43
 if address: ::1
   priority: 8 (static)
      flags: <UP,GATEWAY,DONE,STATIC>
     use       mtu    expire
      60     32768         0 
DISABLED