Updates :: Any Way To Restrict P2P Updates To Specific Networks?

Is there any way to restrict the peer to peer sharing of Windows Updates (WUDO, just so this shows up in searches) to only specific local networks? I know I can say to get/share updates with PCs on the local network, or local plus internet. But I'd like to restrict this further - don't share on every local network I happen to be on, but only on the local network when I'm at my office, for example.

All of my users have laptops, and most travel extensively. We have bad bandwidth at the office, so the P2P would definitely be nice. But I don't want them sharing updates when they're travelling, as they're often in locations with strict (and/or expensive) capping. Is there any way to do this without the user having to manually turn the option on or off depending on location?