==== 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      147633352     1179.887  100.00% 
Conn:   1 Mbps:     1179.887 Peak Mbps:     1179.887 Avg Mbps:     1179.887
        2001      190633312     1525.066  100.00% 
Conn:   1 Mbps:     1525.066 Peak Mbps:     1525.066 Avg Mbps:     1525.066
        3001      186567024     1494.030  100.00% 
Conn:   1 Mbps:     1494.030 Peak Mbps:     1525.066 Avg Mbps:     1494.030
        4002      221159000     1767.504  100.00% 
Conn:   1 Mbps:     1767.504 Peak Mbps:     1767.504 Avg Mbps:     1767.504
        5011      231824520     1839.877  100.00% 
Conn:   1 Mbps:     1839.877 Peak Mbps:     1839.877 Avg Mbps:     1839.877
--- fc00:0:0:1::41 tcpbench statistics ---
1142449280 bytes sent over 6.002 seconds
bandwidth min/avg/max/std-dev = 1179.887/1561.273/1839.877/232.998 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
      61     32768         0 
DISABLED