Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    Tunnelbroker.net MTU problem connected with vDSL PPPoE

    Scheduled Pinned Locked Moved IPv6
    2 Posts 2 Posters 2.2k Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • S
      sevet
      last edited by

      Hi,

      New to IPv6 trying to do the he.net certification program, I setup the GIF tunnel to the tunnelbroker.net was able to access google and youtube on ipv6 but not pass the explorer test on he.net.

      Used test-ipv6.com and it showed an MTU error, I checked a few values on the tunnel assigned interface and found 1452 was the highest MSS i could set, and then everything worked.

      My question is why is this happening? I saw that on IPv6 there is ICMP message of packet too big, I also enabled all ICMP for ipv6 on the interface and also saw on this forum that pfsense enables these needed ICMP messages by default.

      Is this a bug? did I miss something on the configuration? I'm on the latest snapshot of 2.1.

      1 Reply Last reply Reply Quote 0
      • jimpJ
        jimp Rebel Alliance Developer Netgate
        last edited by

        http://redmine.pfsense.org/issues/2129

        Remember: Upvote with the 👍 button for any user/post you find to be helpful, informative, or deserving of recognition!

        Need help fast? Netgate Global Support!

        Do not Chat/PM for help!

        1 Reply Last reply Reply Quote 0
        • First post
          Last post
        Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.