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Do you have any more info on this? What protocols are being dropped? And which routing systems are dropping them Just curious

• unethical_ban 11y ago
  Many firewalls filter out non-TCP/non-UDP traffic as a matter of policy. Heck, network professionals are having to be reminded NOT to block all ICMPv6 on their border (like they do for v4).
  • digitalsushi 11y ago
    This generally occurs far enough down the stream that it's only a matter of bopping a clueless senior netop on the head. Nothing upstream is going to block arbitrary packet types. Could you imagine if backbone peers were dropping packets like that? The internet "routes around the damage" and this would be an application of that. At the social level, it would involve people within an org saying "fix this".
    • noselasd 11y ago
      Pretty much every router/modem people have at home does NAT, and does so for UDP, TCP, ICMP and some do GRE and that's it. And they're not getting updated to NAT any new protocol directly over IP that people come up with.
• AndrewDucker 11y ago
  See slide 22.