'PF was wedged/busy and has been reset' followed by WAN slow down

  • This morning we noticed quite a slowdown and intermittent drops when accessing the internet.

    Pings over the WAN seemed fine, but internet access was very flaky. In the logs we noticed the two errors below:

     PF was wedged/busy and has been reset.	@ 2016-08-31 08:45:46
    Filter Reload
     There were error(s) loading the rules: pfctl: DIOCXCOMMIT: Device busy - The line in question reads [0]: @ 2016-08-31 08:45:47

    Box is a Supermicro SuperServer 5018A-FTN4 but with a C2558 quad core CPU.

    Any ideas why the error might have occurred and whether it coudl be related to the described issue?

  • We are receiveing the same error after the 25th interface gets enabled.
    If we disable it, it's ok.
    If we enable it (no rules but bogus) the message comes up again.