4 ms·

Can you elaborate on why that is?

• revelation 14y ago
  IPv6 no longer supports fragmenting on routers. That means if you don't want to be stuck with the default minimum MTU of 1280 (which you really don't want to for low-latency applications) you need to support Path MTU Discovery, which in turn requires ICMP to go unhindered across a large number of different networks between you and the receiver.
  • aidenn0 14y ago
    ipv6 enforces a minimum MTU of 1280? I've personally run into many VPNs with much smaller MTUs
    • danudey 14y ago
      And so the networks involved in those VPNs need to support path MTU discovery, and they won't have any problems.
• dsl 14y ago
  Because IPv6 breaks hard if ICMP is filtered. It depends on a bunch of newly allocated message types and replaces things like ARP and (some functions of) DHCP with broadcast ICMP. There is tons of little crap like this in the low level details of IPv6. "We don't like that people do X, so we will force them to stop"