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17.1 Legacy Series / WAN link gone sometimes (igb driver, I211 nics), ifconfig d/u fixes it
« on: July 17, 2017, 03:54:41 pm »(UPDATE #2: after many days of tests, the problem came up again - see https://forum.opnsense.org/index.php?topic=5511.msg28781#msg28781 for details)
Hi all,
I'm trying to analyze a strange issue: sometimes (very rare, I was only able to reproduce the issue 2 times), the WAN link goes away. From a laptop behind the OPNsense firewall I am not able to ping the WAN's default gateway anymore. I still can access the OPNsense system.
Details:
- Hardware based on JBC390F541AA-19-B (System: http://www.jetwaycomputer.com/JBC390F541AA.html, Mainboard: http://www.jetwaycomputer.com/NF541.html, 2 4quad Port NICs: http://www.jetwayipc.com/content/?ADPIE1ILAN4_3868.html)
- current OPNsense version 17.1.9 with FreeBSD 11.0-RELEASE-p10
- LAN is on igb0, WAN on igb9
- An "ifconfig igb9 down" followed by an "ifconfig igb9 up" fixes the issue - like also described in this thread here: https://forum.opnsense.org/index.php?topic=4850.msg21238#msg21238
- I was able to reproduce the issue only two times. It occurred soon after booting the OPNsense machine. I do not get any hints in /var/log/system.log.
- I have attached a zip file with the output of various tools.
- Unfortunately I have not checked the ARP cache when the problem occurred. In case I can reproduce it again, I'll check that.
- I have also tried pfSense 2.3.4. I was not able to reproduce the error there, but this may have been just luck, or it works there 'cause they use the older FreeBSD 10.3 compared to FreeBSD 11.0.
Have you ever seen an issue like this?
Do you have any hints what I could do to further analyze the issue?
Thanks in advance and best regards,
Werner