Dhcp not updating lease
At this stage, the DHCP client accepts a lease that any DHCP server has issued.
Note If a client requests an invalid or duplicate address for the network, a DHCP server can respond with a DHCP denial message (DHCPNAK packet).
If the DHCP server is available, it renews the lease and sends the client a DHCPACK packet with the new lease duration and any updated configuration parameters.
The client updates its configuration when it receives the acknowledgment.
The thought process was that yes once every 4 days, the wifi lease would expire and yes, DNS might get updated to the wifi IP temporarily, but within an hour at most, the Net Motion lease would expire/renew, and the IP would be updated back to the Net Motion IP for the device.
We could live with that max 1 hour/avg 1/2 hour window of the "wrong" IP in DNS. Are there priorities negotiated between the scopes in terms of DDNS updates, which one "wins"?
The wifi and Net Motion connections employ Infoblox DHCP scopes to obtain their IP and network settings (the Verizon connections are managed separately via a private IP setup with Verizon, and don't come into play in this issue).
The wifi scope has a lease length of 8 days; the Net Motion client scope has a lease length of 2 hours.
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[j] DHCP client sends a DHCPREQUEST packet 2J DHCP Serverl sends a DHC PACK packet Definitions Purpose of the DHCP lease renewal process Lease period ILLEGAL FOR NON-TRAINER USE The DHCP lease renewal process is the process by which the DHCP client renews or updates its IP address configuration data with the DHCP server.