Hi Everyone, I recently had a recursive server running BIND 9.9.4 on FreeBSD 9.2 appear to wedge and stop responding to clients. I had a flurry of these errors on the console:
sonewconn: pcb 0xfffffe007211d930: Listen queue overflow: 16 already in queue awaiting acceptance I couldn't trace that directly back to the named process by the time I looked at it, but I suspect that's what it was since it's really the only thing this machine is used for and it stopped working. It seems to have oddly become unstuck when I logged into the machine and started looking around. I never restarted named. Everything else on the server was running normally from what I could tell and no other errors existed that I could find. Unfortunately my logs rolled over too fast to check if named had logged anything else interesting. >From what I've found in googling, this is an OS level error stating the >process isn't accepting new TCP connections and it's an application fault. >I've only ever seen this on this particular machine, and just this once. My >other recursive servers are running older versions of FreeBSD. Has anyone come across this before and know how to prevent or correct this properly? Thanks! -Vinny
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