I was reading through the Release notes, and decided to enable
net.inet.tcp.pmtud_blackhole_detection in my test environment. It
appears that the monitoring tunable
net.inet.tcp.pmtud_blackhole_min_activated is incorrectly listed. Using
sysctl -a | grep net.inet.tcp.pmtud, doesn't show it as a result. The
test system is running RC3 built on the 7th from revision 286391 of the
https://svn.freebsd.org/base/releng/10.2 tree.
root@freebsd:/usr/src # sysctl -a | grep net.inet.tcp.pmtud
net.inet.tcp.pmtud_blackhole_mss: 1200
net.inet.tcp.pmtud_blackhole_failed: 0
net.inet.tcp.pmtud_blackhole_activated_min_mss: 0
net.inet.tcp.pmtud_blackhole_activated: 0
net.inet.tcp.pmtud_blackhole_detection: 1
I did confirm that the pmtud_blackhole_min_activated option is also
listed in the tcp(4) man page page as well.
If anyone is more familiar with this than I am can they look into seeing
if there is indeed an error, or if I am missing something here.
--
Thanks,
Dean E. Weimer
http://www.dweimer.net/
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