SO_REUSEPORT extension is committed

[Sepherosa Ziehau]

Hi all,

SO_REUSEPORT extension is committed, it is quite similar to:
https://lwn.net/Articles/542629/

The commit message contains detailed information about DragonFly's
implementation:
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/740d1d9f7b7bf9c9c021abb8197718d7a2d441c9

The SO_REUSEPORT extension is enabled by default.  If you have noticed
any trouble, please let me know.  The SO_REUSEPORT extension could be
turn off for TCP by using "sysctl net.inet.tcp.reuseport_ext=0", and
for UDP by using "sysctl net.inet.udp.reuseport_ext=0"

Best Regards,
sephe

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Tomorrow Will Never Die