The simplest thing to do (for a suitable definition of "simple") is, 
rather than setting up a new IP range for the exit node, tell your 
vendors to exclude the IP address of the exit node. Much like vendors 
who don't allow off-campus access (*cough* uptodate) exclude the proxy 
server address already.

- David

On 2016-03-19 09:46 PM, William Denton wrote:
> On 19 March 2016, Alison Macrina wrote:
>
>> Hi all, Andromeda forwarded me this email and so I decided to join the
>> list in case anyone wants to chat about Tor relays (exits and non-exits)
>> in libraries.
>
> Welcome---I'm glad you joined.
>
> I work at a large university where the library has a small IT department
> and the university has a large one.  University IT ultimately controls
> everything about networking and security.  Library IT is concerned about
> security, and library administration is concerned about making sure our
> contracts with vendors aren't broken by us accidentally opening up JSTOR
> and PsycInfo to Tor users.
>
> How have academic libraries like mine been arranging exit nodes?  Do you
> have any advice, regarding the technology and the advocacy, that would
> help?  We tell vendors our IP range---how could I convince people to set
> up a new one for the exit node?
>
> Bill