Sonewconn: pcb 0xfffff800403893c0: Listen queue overflow: 2 already in queue

[robatwork]

sonewconn: pcb 0xfffff800403893c0: Listen queue overflow: 2 already in queue awaiting acceptance (1 occurrences)

I am getting the above every couple of minutes in the system log. Router is otherwise working well. Had to recently replace one of the DSL modems but the new one is functioning fine.

Having looked at a couple of threads on a similar issue with widely varying advice, including some warnings about not messing with system tunables, I thought I would ask your advice before tinkering

Version 2.3.2-RELEASE-p1 (amd64)
built on Tue Sep 27 12:13:07 CDT 2016
FreeBSD 10.3-RELEASE-p9

I have one LAN and 3 WANS, and the PC is running well within itself in regard to memory, load, CPU, swap, disk etc.

thanks in advance

[doktornotor]

Use the latest stable release at least before debugging such issues.

[robatwork]

OK will upgrade later and revisit