Missing foreign key for lease6.hwaddr_source

Describe the bug

When inspecting the database structure I noticed (using PostgreSQL) that lease6.hwaddr_source is not a foreign key to lease_hwaddr_source.hwaddr_source. This seems inconsistent as both lease6.state and lease6.lease_type are foreign keys.

To Reproduce

Steps to reproduce the behavior:

1. Run kea-admin db-init pgsql
2. Connect to the kea database using psql
3. Check the database schema with \d lease6

Expected behavior

I would expect lease6.hwaddr_source to be a foreign key as it references values in another table.

Environment:

• Kea version: isc-kea-admin, deb package 1.9.3-isc001302020121418142
• OS: Debian GNU/Linux 10 (buster)

Additional Information

None

Contacting you

sander@steffann.nl or +31-6-22660412