IPSec network fails silently on a host

@nthomson 1.1 is over a year old and the way networking works has been completely redone to use CNI drivers since then. Please upgrade to a modern version, we don’t even support 1.1 for paying customers anymore.

@leodotcloud replied to github issue https://github.com/rancher/rancher/issues/9377

thanks

@vincent We previously tried to upgrade to Rancher 1.6.0 and ran in to issues that are potentially similar in nature to whats being outlined here. In the case of 1.6, the IPSec network appears to be having connectivity issues, which in turns causes container health checks to constantly fail and be recycled (including the health check containers themselves). I plan to revisit this exercise soon and will post or create an issue if we continue to see issues with more information.

For future reference, we have https://github.com/rancher/rancher/issues/9971 being targeted for v1.6.11 which will retry the connection.