Tested in an Emulab testbed.
before this change:
cc@s1:~ % netstat -nRp tcp
Active Internet connections
Proto Recv-Q Send-Q Local Address Foreign Address flowid ftype
tcp6 28 0 fd00::2.41352 fd00::3.5001 00000000 0
tcp6 28 0 fd00::2.10845 fd00::3.5001 00000000 0
tcp6 28 0 fd00::2.28532 fd00::3.5001 00000000 0
tcp6 28 0 fd00::2.34124 fd00::3.5001 00000000 0
tcp4 0 0 155.98.38.76.30300 155.98.32.70.7777 00000000 0
tcp4 0 44 155.98.38.76.22 155.98.33.74.26565 00000000 0
tcp4 0 0 127.0.0.1.16505 127.0.0.1.57268 00000000 0
tcp4 0 0 127.0.0.1.57268 127.0.0.1.16505 00000000 0
tcp4 0 0 127.0.0.1.16505 127.0.0.1.37918 00000000 0
tcp4 0 0 127.0.0.1.37918 127.0.0.1.16505 00000000 0
tcp4 0 0 155.98.38.76.655 155.98.33.74.2049 00000000 0
tcp4 0 0 155.98.38.76.801 155.98.33.74.2049 00000000 0
tcp4 0 0 155.98.38.76.961 155.98.33.74.2049 00000000 0
tcp4 0 0 155.98.38.76.61337 155.98.33.74.16505 00000000 0
after this change:
cc@s1:~ % netstat -nRp tcp
Active Internet connections
Proto Recv-Q Send-Q Local Address Foreign Address flowid ftype
tcp6 28 0 fd00::2.53798 fd00::3.5001 69471012 130
tcp6 28 0 fd00::2.49017 fd00::3.5001 c0f8300e 130
tcp6 28 0 fd00::2.27053 fd00::3.5001 6b00fc7f 130
tcp6 28 0 fd00::2.62480 fd00::3.5001 f2c58257 130
tcp4 0 0 155.98.38.92.1010 155.98.33.74.2049 8441e9b3 130
tcp4 0 0 155.98.38.92.983 155.98.33.74.2049 78ead1a3 130
tcp4 0 0 155.98.38.92.874 155.98.33.74.2049 87256eba 130
tcp4 0 44 155.98.38.92.22 155.98.33.74.21978 f6394a58 130
tcp4 0 0 127.0.0.1.16505 127.0.0.1.65394 a7abe25d 130
tcp4 0 0 127.0.0.1.65394 127.0.0.1.16505 898a4162 130
tcp4 0 0 127.0.0.1.16505 127.0.0.1.24887 36d92684 130
tcp4 0 0 127.0.0.1.24887 127.0.0.1.16505 4d534846 130
tcp4 0 0 155.98.38.92.40777 155.98.33.74.16505 f6a17c46 130