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  1. #1
    Master Untangler
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    Default Router crash/dhcp discover sent to isp server(80000 times)

    Okey. For 3 days ago over night my router crashed and I had to shut it down in the morning when I came home.
    The error 500 seem to be related to some I/O error for the hardrive(SSD)
    Earlier where did get this error I took a picture from the console screen
    Attachment 7139
    What I have to explain first is that my ADSL has a bridge modem and my other line is a 4G router. Both connected to my untangle box.
    So when the router crashed(white error site on login screen) it seems that a dhcp discover request was sent out on the net. around 80000 of them from the middle of the night to around 9 in the morning when my ISP shut down the line. Of course I did not notice that the adsl was shut down before yesterday evening because of the 4G line.
    I contacted them and got it reopened, but I have to call them again today so I can talk to the tech department there.

    So since I can't figure out how a dhcp discover went out on the internet. I have tried to limit the possibility by making some rules on the router. Blocking all contact between the wan ports and all dhcp traffic through untangle.

  2. #2
    Untangler jcoffin's Avatar
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    Default

    Without properly working hardware it's not worth diagnosing software issues. Fix the hard drive and the see if it still happens.

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  3. #3
    Untangle Ninja sky-knight's Avatar
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    Linux doesn't live off a hard drive like Windows does, most of the OS is in RAM and can operate quite happily with a defective hard disk for some time. That being said, stuff gets weird sometimes, and if dhcpd decided it needed an address, but couldn't get one because it couldn't write the appropriate files to the hard disk? I could see this happening.

    So as JCoffin said, replace the disk and move on.
    Rob Sandling, BS:SWE, MCP
    NexgenAppliances.com
    Phone: 866-794-8879 x201
    Email: support@nexgenappliances.com

  4. #4
    Master Untangler
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    Default

    Thx both of you. My linux knowledge is slim to none. But from that image. You agree it's disk related, right?

  5. #5
    Untangle Ninja sky-knight's Avatar
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    It's impossible to say for certain, but I've seen linux boxes do some seriously weird stuff when they've got bad disks or bad ram.
    RBoynton likes this.
    Rob Sandling, BS:SWE, MCP
    NexgenAppliances.com
    Phone: 866-794-8879 x201
    Email: support@nexgenappliances.com

  6. #6
    Master Untangler
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    Thx. Weird thing is, this started on version 12. I never got these problems on earlier versions.

  7. #7
    Untangle Ninja sky-knight's Avatar
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    You never had a drive fail on the older versions.

    The issue here is that drive fault, not the software.
    Rob Sandling, BS:SWE, MCP
    NexgenAppliances.com
    Phone: 866-794-8879 x201
    Email: support@nexgenappliances.com

  8. #8
    Master Untangler
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    Quote Originally Posted by sky-knight View Post
    You never had a drive fail on the older versions.

    The issue here is that drive fault, not the software.
    I did not mean to sound like I blame the software. I'm just saying.
    Anyway I think the drive may have been faulty before version 12. But at the earlier version it may not have had any vital impact on the system. Just pure luck I guess. Cheap corsair ssd drive.

  9. #9
    Untangle Ninja sky-knight's Avatar
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    That's what SSDs do, they're RAM. So when they fail to do arbitrary weird stuff just like RAM does.

    Detecting a bad one is just as hard too! Except we don't really have the tools to run a memtest on it.
    Rob Sandling, BS:SWE, MCP
    NexgenAppliances.com
    Phone: 866-794-8879 x201
    Email: support@nexgenappliances.com

  10. #10
    Master Untangler
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    Default

    Ye. But that does not stop me from going for another ssd. I rather like them.
    I don't have one normal hdd in my computers at all.
    No noise and much faster is a good argument for using ssd. Price vs storage space, not so much.
    Last edited by elmy79; 05-28-2016 at 02:44 PM.

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