On 13 Apr 2020, at 18:02, Tom Beecher <beecher@beecher.cc> wrote:

My recommendation would be not to bother. :) 

Just encode the router loopback IPv4 address in the system identifier bytes and call it a day. 

On Mon, Apr 13, 2020 at 9:55 AM JASON BOTHE via NANOG <nanog@nanog.org> wrote:

Does anyone have any recommendations for a database or IPAM platform that can house IS-IS addressing?  Can’t seem to find anything out there.

Thanks

J~