Since my 5268AC was installed four days ago, it has been issuing 5 minute DHCP leases to the router using its DMZ+ mode.
I also see [Node 99.34.xxx.yyy is up] messages in the 5268AC event log every 5 minutes.
And I also see the paired messages shown below in the 5268AC firewall log every 5 minutes:
Remove node 1 from DMZ+
Put node 1 into DMZ+ mode
Is this normal behavior for the 5268AC using DMZ+ mode (or for AT&T VDSL2 circuits)? I have not noticed any problems, but a 5 minute DHCP lease time seems a bit short for what I would consider normal. I know that Comcast starts issuing such short DHCP lease times for a few days prior to taking the CMTS down for scheduled maintenance. Does AT&T do the same thing before taking the VRAD offline for scheduled maintenance?
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