Service Startup Causes Network to go offline

  • I have noticed that when the DHCP service is starting up the network interface goes offline for about 90 seconds.

    This happens when I make a change to the DHCP service that requires a restart to the system while running. I did a stop, then start (instead of restart) and the network only goes off line at startup. This also seemed to happen when I restart the DNS Resolver.

    I do not recall having this issue before, but to be honest I have only had this box in use for 4 days.

    Current Version

    2.3.2-RELEASE-p1 (amd64) 
    built on Tue Sep 27 12:13:07 CDT 2016 
    FreeBSD 10.3-RELEASE-p9 

    Any pointers in the right direction here would be great.

    Thanks in advance.

  • 1. What type of interface is it?
    2. What specific changes are you trying to make
    3. Have you checked Status:System Logs: most likely you would want to check dhcp and system.

    More info would be helpful  ;D

  • Thanks here are some additional details. Let me know what else you may need to assist. Appreciate the assistance.

    1 - LAN interface - Intel based NIC - Here are the specs -
    2 - The change does not seem to matter, if I go to the service and click restart I have this issue.
    3 - Nothing seemed to jump out at me when I looked. Is there something specific you think I should be looking for here?

    Thanks again

  • Hrm, seems the problem has gone away this morning. Not very reassuring. When things just "go back to normal" I always get uncomfortable.

    Will have to track more closely to see if I can see what the deal is.

    If anyone else has seen a DHCP / DNS Service Restart impact network availability and can share that would be great.

    Thanks again.

  • And it's back!

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