Windows 10: KB4493509 causes 6 second IP drop at DHCP lease expiry

Discus and support KB4493509 causes 6 second IP drop at DHCP lease expiry in Windows 10 Network and Sharing to solve the problem; A new network problem since KB4493509 was installed. Uninstalling and blocking the update fixed the problem for me. I run some internet monitoring... Discussion in 'Windows 10 Network and Sharing' started by TechnutCanada, Apr 22, 2019.

  1. KB4493509 causes 6 second IP drop at DHCP lease expiry


    A new network problem since KB4493509 was installed. Uninstalling and blocking the update fixed the problem for me.


    I run some internet monitoring and streaming on my Win10 Home computer and after KB4493509 was installed I discovered that my IP traffic was failing for a period of about 6 seconds each time my DHCP lease expired.


    From my router's DHCP logs it looks to me like lease renewal attempts fail (it appears that the computer is unable to process the ACK from the router) until the lease finally expires and then the computer requests a new lease, and that succeeds. But while that negotiating is happening all IP traffic fails (for about 6 seconds).


    Apr 20 12:36:46 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:46 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:47 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:48 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    Apr 20 12:36:53 router1 daemon.info dnsmasq-dhcp[7512]: DHCPDISCOVER(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:53 router1 daemon.info dnsmasq-dhcp[7512]: DHCPOFFER(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:53 router1 daemon.info dnsmasq-dhcp[7512]: DHCPREQUEST(br0) 192.168.1.106 6c:62:6d:9f:68:9e

    Apr 20 12:36:53 router1 daemon.info dnsmasq-dhcp[7512]: DHCPACK(br0) 192.168.1.106 6c:62:6d:9f:68:9e Desktop6

    :)
     
    TechnutCanada, Apr 22, 2019
    #1
  2. idahebert Win User

    dhcp lease

    how do I renew my DHCP lease
     
    idahebert, Apr 22, 2019
    #2
  3. ElderN Win User
    DHCP-Client IP lease denied event ID 1002

    Where are these many similar issues?

    If you don't want to get the same ideas you have already seen tell us what you have done so far that did not work.

    Is this a computer on a corporate network/office environment or something more like in a dwelling?

    How is the system connecting to the Internet?

    Are their other devices that have the same issue or do other device work fine?

    When Windows wants to get on a network it requests an IP address from a DHCP (Dynamic Host Configuration Protocol) Server on the network. The DHCP server usually responds with an IP address for the computer to use for a limited amount of time (a lease period)
    and when that lease expires that IP address can be used again by another computer on the network.

    It is unlikely that you have control over the DHCP server - that would be a server on a corporate network or a server that handles things from your Internet Service Provider (ISP).

    It looks like your system has requested an IP address from a DHCP server and the request was denied for some reason so you might not be able to get on the network since your system may not have a valid IP address.

    Since we don't know any details about your environment or any history of this issue you can expect only generic troubleshooting ideas.

    Open a Command Prompt as Administrator and issue the following commands one at a time pressing the enter key after each:

    ipconfig /flushdns

    ipconfig /release

    ipconfig /renew

    exit

    Restart your computer and test your connectivity.
     
    ElderN, Apr 22, 2019
    #3
  4. KB4493509 causes 6 second IP drop at DHCP lease expiry

    IP address lease 192.168.1.2 for Network Card denied by DHCP server


    @Samuria, I had a look at my modem router's settings (in a browser at http://192.168.1.1), and saw this -


    KB4493509 causes 6 second IP drop at DHCP lease expiry [​IMG]


    I wonder if ticking the "Lease duration" field, so that "Permanent lease" is enabled would help to resolve this issue? I'm sorry, but this topic is technically over my head - how do I find out if the IP address is being used by something else which may have logged off? Thanks a lot.
     
    W10User123, Apr 22, 2019
    #4
Thema:

KB4493509 causes 6 second IP drop at DHCP lease expiry

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