[Bug 209471] Listen queue overflow due to too many sockets stuck in CLOSED state

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=209471

--- Comment #1 from Robert Blayzor <rblayzor at inoc.net> ---
Also experiencing this on other VM's (same FreeBSD release), but with Apache
2.4...

The majority of sockets appear to be from our F5 load balancers that were just
doing simple HTTP health checks.



tcp6      36      0 webmail1.http          web-slb-1.alb1.i.13777 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.45830 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.12729 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.5479  CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.54684 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.24819 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.54619 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.6339  CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.54550 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.52960 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.17200 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.24141 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.33182 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.5888  CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.39082 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.57296 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.65150 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.4126  CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.12629 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.57158 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.34179 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.25479 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.26378 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.57018 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.34255 CLOSED
tcp6     113      0 localhost.http         localhost.10722        CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.30656 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.53942 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.30094 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.46475 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.20403 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.45081 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.56752 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.15115 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.41385 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.53667 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.25213 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.50966 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.15194 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.53532 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.13519 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.40583 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.2167  CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.53402 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.3610  CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.44162 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.43930 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.53267 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.12863 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.61568 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.56140 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.53133 CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.59403 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.4895  CLOSED
tcp6      36      0 webmail1.http          web-slb-0.alb1.i.57703 CLOSED
tcp6      36      0 webmail1.http          web-slb-1.alb1.i.27469 CLOSED

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