Core: MAC address database outdated

[xpac1985]

Describe the bug
The MAC address database used to get e.g. the hardware vendor from a mac address in the DHCP -> Leases page is pretty outdated.
According to this forum post, OPNsense uses the netaddr Python lib, which hasn't been updated since January 2017 and has no self-update mechanism built in. From the issues in their Github project, this has been mentioned multiple times, but it seems to be rather dead.

To Reproduce

1. Go to Services -> DHCPv4 -> Leases (status_dhcp_leases.php)
2. Have any recent device on your network
3. See vendor names only for older hardware.

Expected behavior
Show vendor names for all MAC addresses.

Additional context
Maybe using the mac-vendor-lookup Python library is a valid replacement:
https://pypi.org/project/mac-vendor-lookup/

[AdSchellevis]

It's probably better to see how https://github.com/netaddr/netaddr/pull/189 pins out, the PR is only a couple of months old, which isn't unusual for these kind of projects, migrating to something else in the hope that it won't get abandoned has risks of its own.

Another library to only fetch http://standards-oui.ieee.org/oui.txt is something I would rather prevent from happening.

[xpac1985]

Yeah, I see the reasoning behind this. I just pointed to that lib because it allows to automatically pull the list for updates, while netaddr has it statically bundled and you'll have to wait for another release to be available for up to date data. It's not super important though, so I don't wanna cause a lotta work. ;-)

[brianmaissy]

Hey, I saw that you referenced my PR to netaddr. I'm trying to get it merged, but the maintainer isn't being so responsive. If it continues this way at some point I will also give up, and then I might fork the project and continue maintaining it (or at least updating the databases) myself. We'll be in touch.

[brianmaissy]

Sorry it's been a while and I haven't been in touch. We ended up vendoring it, but it looks like the project might be back to active maintenance.

[AdSchellevis]

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