Hello, Please scratch this bug report. Likely cause was some weirdness with pfSense firewall configuration when using an IPv6 tunnel broker. My apologies.
-- You received this bug notification because you are a member of Documentation Packages, which is subscribed to ubuntu-docs in Ubuntu. https://bugs.launchpad.net/bugs/2051255 Title: SSHD fails when Vmware Ubuntu server guest has 6 vCPUs Status in ubuntu-docs package in Ubuntu: New Bug description: Guest configuration: Intel CPU: E5-2640 v4, 10GB VMDK, 20GB RAM, no swap, vmnet3 driver connected to internal NIC of pfSense 2.7 firewall, Ubuntu server 22.04.3 LTS, OpenSSH server 1:8.9p1-3ubuntu0.6 500. Connection via Hurricane Electric IPv6 tunnel broker to server in Miami, Fl. IPv6 ICMP packets pass without problems. ESXi host: Dell PowerEdge R630, 128GB, Active-Active NICs for Internet connection SSH Client: Remmina 1.4.29, using one-character password or ex25199 SSL certificate. Expectation: Connecting to the guest machine after command: ssh -vvvvv <username>@<servername>.eastlakeventures.club Results: With 6 vCPUs: Connection failed with last output of "debug3: set_sock_tos: set socket 3 IPV6_TCLASS 0x10" With 4 vCPUs: Result after above "debug3" message: "debug1: Connection established and active console access. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-docs/+bug/2051255/+subscriptions -- Mailing list: https://launchpad.net/~documentation-packages Post to : documentation-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~documentation-packages More help : https://help.launchpad.net/ListHelp
