Kernel sonewconn Listen queue overflow

[TheNetStriker]

Since the update to pfSense 2.2 I've got a lot of those error in my kernel log:

kernel: sonewconn: pcb 0xfffff80003b03310: Listen queue overflow: 8 already in queue awaiting acceptance (5 occurrences)

The logs always have the same pcb address. I've also looked for this address in netstat but I didn't find anything. I've also disables OpenVPN for some time but the logs are still appearing. Does anyone have an idea what could cause this problem?

[TheNetStriker]

I've just found out that the miniupnpd is causing these errors. If I disable the upnp service the error logs do not appear any more. When upnp ist active I also get error in the "Routing daemon log entries":

miniupnpd[49093]: accept(http): Software caused connection abort

What could cause this problem and how can I solve this?

Edit: I now found the source of the problem. The problem was the DLNA server on my QNAP nas. It sent a lot of upnp spam to the firewall which rejected most of the requests. I've now disabled the DLNA server completeley and I'am now using Twonky server instead.

[lowprofile]

I am having this issue now after upgrading to 2.2.2 - The only thing i am running is OpenVPN…
Have no clue why it appears.

Apr 22 21:23:43 kernel: sonewconn: pcb 0xfffff8006da07620: Listen queue overflow: 8 already in queue awaiting acceptance (15 occurrences)
Apr 22 21:22:37 kernel: sonewconn: pcb 0xfffff8006da07620: Listen queue overflow: 8 already in queue awaiting acceptance (15 occurrences)
Apr 22 21:21:31 kernel: sonewconn: pcb 0xfffff8006da07620: Listen queue overflow: 8 already in queue awaiting acceptance (15 occurrences)
Apr 22 21:20:24 kernel: sonewconn: pcb 0xfffff8006da07620: Listen queue overflow: 8 already in queue awaiting acceptance (15 occurrences)
Apr 22 21:19:19 kernel: sonewconn: pcb 0xfffff8006da07620: Listen queue overflow: 8 already in queue awaiting acceptance (14 occurrences)
Apr 22 21:18:16 kernel: sonewconn: pcb 0xfffff8006da07620: Listen queue overflow: 8 already in queue awaiting acceptance (14 occurrences)
Apr 22 21:17:12 kernel: sonewconn: pcb 0xfffff8006da07620: Listen queue overflow: 8 already in queue awaiting acceptance (12 occurrences)
Apr 22 20:01:45 kernel: sonewconn: pcb 0xfffff8006da07620: Listen queue overflow: 8 already in queue awaiting acceptance (1 occurrences)