Unexpected tunnelin/forwarding attempts after upgrade

[SamTzu]

After upgrade this message started occasionally flash on LXC terminals.

channel 3: open failed: administratively prohibited: open failed

Then after a few seconds it disappears and says something about forwarding but too quickly to see.

Remote port forwarding failed to listen on port XXX

Oddly enough there is nothing on journalctl about this.

Any ideas?

 

[SamTzu]

PS. I'm not tunneling anything.

 

[SamTzu]

I'm thinking this maybe the cause:

root@vm2404:~# cat /var/log/syslog |grep block
Oct 29 14:42:33 vm2404.ic4.eu kernel: [681424.800987] vmbr1: port 9(fwpr700p0) entered blocking state
Oct 29 14:42:33 vm2404.ic4.eu kernel: [681424.808510] fwbr700i0: port 1(fwln700i0) entered blocking state

root@vm2404:~# cat /var/log/syslog |grep forward
Oct 29 14:42:33 vm2404.ic4.eu kernel: [681424.801002] vmbr1: port 9(fwpr700p0) entered forwarding state
Oct 29 14:42:33 vm2404.ic4.eu kernel: [681424.808628] fwbr700i0: port 1(fwln700i0) entered forwarding state