IPad sync hangs after changing Network Locations

I have a problem where often after I change Network Locations, the next iPad sync will hang in Step 1 of 5 with the progress right under the "e" of Step.
I have let it sit there for hours and it never progresses. I try to eject the iPad, it will never eject it.
I have sort of a formula to recover from this.
* I have to just disconnect the USB cable from the Mac.
* I shut down iTunes.
* I reboot the computer.
* I try to power off the iPad by holding down both buttons.
* It will hang for ever with the little spinning thing going in the middle of the screen.
* I will hold down the both buttons again and it will finally power off the iPad.
* I boot the iPad again.
* I bring up iTunes on the Mac and connect the USB cable and let it try to sync.
* This will fail the first time on Step 5 of 5 with the message "iTunes could not back up the iPad "My's iPad" because an error occurred. OK.
* I click OK.
* I eject the iPad.
* I shutdown iTunes and bring it back up.
* I plug the iPad back in to the MacBook Pro.
Now the iPad will sync and continue to sync normally unless I change my network "Location". Once I change my Network Location there is some probability that iTunes and the iPad will get into this stuck condition.
I've looked at the main console logs and All Messages. I don't see anything obvious.
Is anyone else seeing this behavior?
Does anyone have some hints about how to debug this?
-- Ed

Hi,
Tap Settings / General / Reset / Reset Network Settings.
See if that helps...
Carolyn

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