Quick and well targeted answer. Thanks.  First class

I was looking for a more detailed comparison.

Question only answered partially, even after clarification. Still did
not answer how often DC vehicles need to be inspected or specific
violations for cracked windshields in areas listed. Telling me to call
the DMV is not a helpful answer.

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Thanks for the detailed answer.

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OK, thanks for your help!

Great answers......I've definitely got a good place to work from now!

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Just what I was looking for.  Thanks.

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drunker-ga was the most helpful, by suggesting that the router may
have snatched the IP.
In fact, that was the case! I reconfigured the router and the IP was
freed up.
We do not use DHCP, but when the router went through a cold re-start
it must have defaulted to DHCP support(?) Either that, or by some
other means
the IP was being held by the router for its own purposes.
Thanks for being there!

Timely and pertinent. Good job, mit-ga.