When I was in school 15 years ago, BGP was described to me as a sketchy game of telephone.
“Oh yeah you want to route to a 129.37.x.x address? I know a guy who knows a guy. Said he’s the owner of the whole 129./ block. In fact, he’s my personal friend. I mean friend’s friend… Why don’t I just take those pesky packets off your hands and we walk away”
How could they? The alternative starts to look like every router maintains complete "internet state"...which turns out isn't possible. Awareness is complex and expensive. And there are endless variables and "whys" to consider
“Oh yeah you want to route to a 129.37.x.x address? I know a guy who knows a guy. Said he’s the owner of the whole 129./ block. In fact, he’s my personal friend. I mean friend’s friend… Why don’t I just take those pesky packets off your hands and we walk away”
Has anything fundamentally changed?