Is DHCP lease expriring years from now okay?

Posted by sharptooth on Server Fault See other posts from Server Fault or by sharptooth
Published on 2012-09-25T08:13:41Z Indexed on 2012/09/25 15:39 UTC
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dhcp

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Azure

I'm reviewing Azure web role logs and there's output from ipconfig /all

IPv4 Address. . . . . . . . . . . : 10.61.145.37(Preferred) .
Subnet Mask . . . . . . . . . . . : 255.255.254.0.
Lease Obtained. . . . . . . . . . : Monday, September 24, 2012 12:26:00 PM.
Lease Expires . . . . . . . . . . : Thursday, October 31, 2148 6:55:12 PM.

you see, the lease expires in year 2148 but my VM will likely not run for more than one month - when I deploy the new version of my code I first deploy it to new VMs, then switch traffic, then release the new VMs. In general such usage pattern is normal - VMs typically live from several dozen minutes to several weeks on Azure.

I suspect the lease that long will cause problems on the internal Azure network sooner or later.

Is such long DHCP lease okay or is it likely a misconfiguration?

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