🌐IPv8 Draft Claims Zero Address Exhaustion With 4B IPs Per ASN
IPv8 promises unlimited addresses but breaks old gear
TL;DR
The IPv8 draft claims to solve address exhaustion by giving every ASN 4 billion IPs. But it breaks legacy hardware and centralizes network management in a single 'Zone Server'.
Internet-Draft IPv8 promises zero IP address exhaustion by allocating 4 billion addresses per ASN, ensuring backward compatibility with IPv4 without forced migration. However, the new protocol introduces significant challenges: every router must enforce TCP MSS clamping to avoid exceeding MTU limits, and legacy switches drop throughput from 400Gbps to <10Gbps when handling IPv8 frames. The Linux kernel fib_trie managed 112,117 active routes with sub-millisecond latency under continuous traffic, but the protocol's centralization in a 'Zone Server' creates single points of failure.
Key Points
Every ASN holder receives 4 billion host addresses under IPv8
Linux Kernel 6.6 implements native AF_INET8 supporting TCP8, UDP8, RAW8
IPv8 expands IP header from 20 to 28 bytes with source and destination address additions
TCP MSS clamping must be enforced at 1452 bytes for standard Ethernet links
Legacy switch ASICs drop throughput to <10Gbps when handling IPv8 frames
Why It Matters
If you're running a multi-homed network with legacy switches, IPv8's promise of unlimited IPs comes with the catch of massive packet loss and single points of failure. The protocol's centralization in a 'Zone Server' could make your network more vulnerable.
Frequently Asked Questions
Why does this matter?
If you're running a multi-homed network with legacy switches, IPv8's promise of unlimited IPs comes with the catch of massive packet loss and single points of failure. The protocol's centralization in a 'Zone Server' could make your network more vulnerable.
What happened?
The IPv8 draft claims to solve address exhaustion by giving every ASN 4 billion IPs. But it breaks legacy hardware and centralizes network management in a single 'Zone Server'.
Comments
Be the first to comment
Enjoyed this article?
Get it daily. 7am. Free. Reads in 5 minutes.
Join 3,005 builders reading daily.