i do have to wonder if 23 years later they're still with RedHat especially since IBM renegotiated many of the contracts when they bought redhat. i'm almost curious enough to email Ernie Ball with the full expectation that they email back "we ain't telling you shit about our network topology"
EDIT: Curiosity got the better of me and I sent an email asking
edit2: they emailed back with an extremely reasonable "we ain't telling you shit about our network topology"