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  1. #11
    Untangle Ninja Jim.Alles's Avatar
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    a look inside the black-box that you might be interested in:

    Code:
    --dhcp-client-update
    Normally, when giving a DHCP lease, dnsmasq sets flags in the FQDN option to tell the client not to attempt a DDNS update with its name and IP address. 
    This is because the name-IP pair is automatically added into dnsmasq's DNS view. 
    This flag suppresses that behaviour, this is useful, for instance, to allow Windows clients to update Active Directory servers. 
    See RFC 4702 for details.
    If you think I got Grumpy

  2. #12
    Untangle Ninja Jim.Alles's Avatar
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    Quote Originally Posted by sky-knight View Post
    Does setting the hostname in the devices list update the Untangle UI everywhere?
    No. there are too many distinct places:
    • The device itself
    • Device table
    • DHCP
    • Directory Connector
    • DNS
    • OpenVPN
    • Reports


    Therefore, the snake pit under the can of worms.

  3. #13
    Untangle Ninja Jim.Alles's Avatar
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    Last edited by Jim.Alles; 09-17-2020 at 12:15 AM.

  4. #14
    Untangle Ninja dwasserman's Avatar
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    Maybe in reports/name map tab you can force to the true name
    The world is divided into 10 kinds of people, who know binary and those not

  5. #15
    Untangle Ninja Jim.Alles's Avatar
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    And addressing the O.P. again:

    I don't think this has much to do with DNS/DHCP
    The trend in the other posts points me to the devices database getting hosed.

    I am testing these ideas at this time, no guarantees.

    You can inspect the json file with an export of the devices table.
    keep that as a backup.

    I would try (NOT recommend) deleting all entries in the devices table.
    see if that gets re-populated correctly (I don't know).

  6. #16
    Untangle Ninja Jim.Alles's Avatar
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    Exclamation Underlying issues

    Quote Originally Posted by sky-knight View Post
    Need a way to delete leases?.
    No.

    This is not a DHCP issue, or a dnsmasq issue, or even 'updating from DHCP'.

    There is an issue with NGFW updating Hosts from the Devices table.

    I see that when you delete something from Devices, like tags or usernames, and the field becomes blank, or <null>; the Hosts table never reflects that. It retains the old data.

    What we need as a tool for immediate mitigation is a delete button on the Hosts table rows, to administratively clean-up transient conditions that may occur.

    Secondly, and a much more critical issue, is that the Hosts table retains stale IP address assignments to include a situation where one MAC address is listed twice, with two different IP addresses. This is simply a logically illegal state. When a device MAC address appears on the network with a new IP address (ARP table entry), the initial row must be deleted immediately. It doesn't matter where the data is coming from. It is just about impossible to even force dnsmasq to cause this kind of condition.

    Last edited by Jim.Alles; 09-18-2020 at 09:46 PM.

  7. #17
    Untangler
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    I'm looking to offload DHCP to something else or use another vendors NGFW atm.

  8. #18
    Master Untangler
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    Same issue here and I have a ticket open.

    The hosts table is showing wrong/old devices. Some are there more than once. There is no way to delete entries.

    I have found the following and am tempted to run the script:

    #!/bin/dash

    /etc/init.d/untangle-vm stop

    rm -f /usr/share/untangle/settings/untangle-vm/devices.js
    rm -f /usr/share/untangle/settings/untangle-vm/hosts.js

    /etc/init.d/untangle-vm start

  9. #19
    Untangle Ninja Jim.Alles's Avatar
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    Quote Originally Posted by manilx View Post
    Same issue here and I have a ticket open.

    The hosts table is showing wrong/old devices. Some are there more than once. There is no way to delete entries.

    I have found the following and am tempted to run the script:

    #!/bin/dash

    /etc/init.d/untangle-vm stop

    rm -f /usr/share/untangle/settings/untangle-vm/devices.js
    rm -f /usr/share/untangle/settings/untangle-vm/hosts.js

    /etc/init.d/untangle-vm start
    Nice find!

    I have not seen that / not recommending you try this at home, but...

    Re-install NGFW? Really Untangle?

  10. #20
    Master Untangler
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    Quote Originally Posted by Jim.Alles View Post
    Nice find!

    I have not seen that / not recommending you try this at home, but...

    Re-install NGFW? Really Untangle?

    Just did this and it cleared all the wrong stuff and started from scratch.
    https://wiki.untangle.com/index.php/...ts_and_Devices
    Jim.Alles likes this.

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