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16.1 Legacy Series / Re: WAN with DHCP loosing internet access.

« on: June 28, 2016, 03:52:20 am »

I run into a similar situation testing OPNsense running in a Hyper-V VM.  Running an iperf3 client with multiple parallel streams (-P option) will cause traffic to stop flowing through OPNSense VM.   Trying to ping any IP address though the outside interface returns ping: sendto: No buffer space available.   Bringing the interface down and up restores connectivity.   I was running into the same issue when running an earlier version of OPNSense on a physical box  (Intel N3150 CPU, Dual RTL8111/8168/8411, 4GB RAM)