Hi all,
I'm using HE tunnelbroker since 2016 without issue, and since 1 month or so, it stopped working.
Since then, the linux box (a Synology NAS) has been updated, the ISP router might have been updated as well (don't know and can't know...) so it's difficult to know why.
here is more info :
- the setup is : a synology NAS with a private IPV4 address and the ISP router with a static public IPV4 address
- all commands (scripted, so they didn't changed) to bring the interface up with ips,... are successful
- ping to server IPV4 address is OK
- ping to client IPV6 address is OK
- ping to server IPV4 address is OK
- when running a IPv6 Portscan from tunnelbroker.net website, the results are OK and ports that should be opened are opened
- ping to a IPV6 website (like
www.kame.net, ...) is sometime ok sometime not ok and might depend on packets size
- curl to a IPV6 fails anytime.
what I've tried :
- setup the IPV6 on another Linux box (a VM on my laptop) : same behavior
- delete tunnel and create a new one : same
- tcpdump the IPV6 traffic while pinging and curling : seeing a lot of output packet but only a few for echo request, and none for http(s) calls and so a lot of retransmission
it seems tunnel is OK, and that router is forwarding IP protocol 41 as the portscan is ok, but can't understand why outgoing traffic (except ping) is failing...
Any ideas ?
what else can I do to narrow down culprit ?
thanks a lot