On Sun, 06 Oct 2019 17:47:24 -0400, b...@theworld.com said: > All a strictly IPv4 only host/router would need to understand in that > case is the IHL, which it does already, and how to interpret whatever > flag/option is used to indicate the presence of additional address > bits mostly to ignore it or perhaps just enough to know to drop it if > it's not implemented.
So... how would a strict IPv4 router handle the case where 8.8.4.5.13.9/40 should be routed to Cogent, but 8.8.4.5.17.168/40 should be routed via Hurricane Electric, and no you can't just route to wherever 8.8.4.5 goes because there's yet another peering war and nobody's baked a cake yet, so sending packets for either route to the wrong link will cause blackholing?
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