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Cannot Release DHCP

Nathaniel Patalod

Hi All,

Good Day!

Is anyone here know how to manually delete the DHCP lease on Sophos firewall. 

IP is not in used but still lease on the DHCP entry.

I already set the lease time in 5 minutes but that is not in used still on the DHCP lease entry.

Thank you very much for those who can share knowledge on this concern.

Best Regards,



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  • 0

    Hello ,

    Thank you for reaching out to the community, I believe as of now there is no option from the GUI or CLI through which we can delete one dhcp lease. Although you can see the dhcp leases and live leases from the following directory by executing the following command under the advance shell:
    1.) cat /tmp/dhcpd.leases
    2.) cat /tmp/dhcpd.leases.live

    Thanks & Regards,
    _______________________________________________________________

    Vivek Jagad | Team Lead, Global Support & Services 


    Sophos Community | Product Documentation | Sophos Techvids | SMS
    If a post solves your question please use the 'Verify Answer' button.

  • 0

    Hello Nathaniel Patalod,

    In General DHCP leases getting saved in /tmp/ folder. So reboot will clear or you can stop the service and remove the file. 

    #service dhcpd:restart -ds nosync (or stop/start) or you can turn off DHCP server and turn on back in case reboot is not possible.

    Thanks and Regards

    "Sophos Partner: Infrassist Technologies Pvt Ltd".

    If a post solves your question please use the 'Verify Answer' button.

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