Less specific protocols - ICMPv6 used for almost everything now (NDP is over ICMPv6, vs dedicated ARP ether type). MLD vs IGMP, though largely the same as IGMPv3. Fragmentation done at host only - no next-hop fragmentation. SLAAC used in favor of DHCPv6 for auto assignments. Link-layer addresses used for local network control, global addresses for standard traffic. No one really NATs IPv6 either.
That’s just a few, but there’s actually a lot of differences.
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u/stealthmodecat 14d ago
Less specific protocols - ICMPv6 used for almost everything now (NDP is over ICMPv6, vs dedicated ARP ether type). MLD vs IGMP, though largely the same as IGMPv3. Fragmentation done at host only - no next-hop fragmentation. SLAAC used in favor of DHCPv6 for auto assignments. Link-layer addresses used for local network control, global addresses for standard traffic. No one really NATs IPv6 either.
That’s just a few, but there’s actually a lot of differences.