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Analysis of building a network using only IX route servers (no transit or bilateral peering) reveals 56.6% IPv4 and 61% IPv6 prefix coverage from outbound routes, but only ~14% inbound reachability via ICMP ping testing across 100+ internet exchanges. The article demonstrates significant diminishing returns after the top 5 exchanges and highlights the asymmetry between BGP route visibility and actual traffic acceptance.

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blog.benjojo.co.uk · ingve · 2 days ago · details · hn