Recent posts

#1

Questions & Answers / Re: Azure filtering IPv6 reque...

Last post by jon47 - January 05, 2026, 10:08:13 AM

I know I'm late responding, but I had a similar (but possibly different) issue. Something is broken with MTU discovery, and the net result is that azure and microsoft servers often respond in weird ways, if they respond at all.

Check your MTU is correct:  in my case clamping it to fit in the limitations of PPPoE and my home broadband fibre to the cabinet fixed things, and MS servers sprang into life.

Jon

#2

Questions & Answers / Ongoing Support for IPv6 Tunne...

Last post by evantkh - December 29, 2025, 05:41:31 AM

May I know if IPv6 Tunnel Service is likely to continue service in coming months or years (assuming my account is old enough for outgoing SMTP and rDNS)? IPv6 is still not widely adopted in the region I am in...

#3

General Questions & Suggestions / Re: Slave domain not getting f...

Last post by midearth - December 23, 2025, 04:32:59 PM

nevermind... it took 3-4h but it finally did it.

#4

General Questions & Suggestions / Slave domain not getting fetch...

Last post by midearth - December 23, 2025, 04:14:02 PM

My slave domain didn't update after pushing the master, so I removed and re-added it, but now it's not pulling. I can see in my log it gets the domain when I add it, or when i validate it, but it's listed as "last checked: never" after a few hours.

Code Select Expand

23-Dec-2025 17:30:18.438 xfer-out: info: client @0x7fc577d95498 216.218.133.2#35511 (domain.net): transfer of 'domain.net/IN': AXFR ended: 1 messages, 59 records, 1666 bytes, 0.001 secs (1666000 bytes/sec) (serial 1566310281)

#5

Questions & Answers / Re: Are 6in4/SIT tunnels alway...

Last post by kcochran - December 05, 2025, 02:08:14 PM

That is mostly the ideal situation.  Anchor the tunnel on a router, have the router treat the LAN side as native IPv6.  That's why we route a /64 (and optional /48) via the ::2 IP of the tunnel's remote end.

#6

Questions & Answers / Re: Do 6in4/SIT Tunnels run on...

Last post by kcochran - December 05, 2025, 01:57:51 PM

6in4 is simply a IPv6 packet with an IPv4 header stuck on top of it, and the protocol field set to 41.  No TCP, UDP or other header in the middle, so no port information to latch onto.

#7

Questions & Answers / Are 6in4/SIT tunnels always 1 ...

Last post by helpdeskaleer - December 04, 2025, 11:54:44 AM

Are 6in4/SIT tunnels always 1 node to one node, and if that node is a router, does that mean that all the machines connected to that router will be able to use IPv6 internet?

#8

Questions & Answers / Do 6in4/SIT Tunnels run on a s...

Last post by helpdeskaleer - December 04, 2025, 11:53:25 AM

Hello,

I am trying to setup a 6in4 Tunnel on an OpenWRT Router.

I thought that I could put my router on the Xfinity DMZ to get it working, but I was told that it wouldn't work because my Xfinity Router needed to be put in Bridge Mode for it to work.

I scoured various sources for information on Linux SIT Tunnels and what port they use, but I haven't been able to find anything on it.

Is this because it runs on a OSI Layer that doesn't include ports, and makes it require bridge mode?

#9

General Questions & Suggestions / Re: NOTIFY to ns1.he.net retur...

Last post by joestr1 - November 30, 2025, 02:06:50 AM

You should notify the server slave.dns.he.net as per the setup instructions in the dialog.

#10

Questions & Answers / Re: Moved to AT&T Fiber, tunne...

Last post by broquea - November 24, 2025, 03:24:36 PM

The native has been quite usable on AT&T fiber. However the tunnel should work (I have one). BGW320 over SFP+ at 5G into a Mikrotik. I didn't have to tweak much in the AT&T device other than making certain it was absolutely doing passthru.