systemd and search domains.

[Ken D'Ambrosio]

Hey, all.  When I fire up my VPN, it re-writes my /etc/resolv.conf.  
Shocker.  But I *want* it to, because then all my DNS stuff is good for 
my company.  But it's NOT good for my personal domain.  I'd like to have 
that added to the search domains.  I'm in Ubuntu; not sure if that 
matters.  From my reading:
* I can the search domains on a per-interface manner, but that seems 
hokey, and subject to issues if I use something (e.g., Bluetooth) to be 
my conduit to the 'Net.
* /etc/resolv.conf shouldn't be manually modified as it'll just get 
overwritten (and I don't want to make it immutable because I want it to 
change depending on whether I'm using VPN or no)
* /etc/dhclient/dhclient.conf (apparently) doesn't matter any more if 
you're running NetworkManager

So, my question: is there an elegant, global way to set/append to my DNS 
domain search list?  Or am I just gonna wind up writing a daemon to wham 
an resolv.conf in-place depending on the current network config?

Thanks,

-Ken