I've seen this, and it worked in reality, so thought I'd pass it on...
You can create serial records without multiple URLS for IEEE
proceedings:

Some records use the "IEEEexplore" URL in combination with a suggested
search strategy in $z, which would work to retrieve all conferences with
the same title:

856 41 ... $u http://ieeexplore.ieee.org/Xplore/conferences.jsp $z
Search: [title keywords]

Frieda Rosenberg, UNC-Chapel Hill

Lisa O'Hara wrote:

> <snip>
We
> catalogued the electronic journals without a problem but are having trouble
> with the proceedings (mostly the sheer quantity of them!).
>
> With the print, we tended to use a  serial record whenever possible. But,
> because of the way that the IEEE site has a separate URL for each year, we
> would need to add an 856 for each year to which we have access.  This would
> make the serial record impossibly long and our system (DRA Classic) can't
> handle it.  .....