IPv6 Connectivity Problems

If IPv6 is configured on the firewall, the AZTCO-FW software will prefer to use it when performing an update. There are cases when a firewall may have broken IPv6 connectivity, however, that contribute to problems updating. This could manifest as a timeout or routing error when upgrading.

Typically the operating system will attempt to fall back to IPv4, but the extra time this takes could also lead to a timeout.

The firewall can be configured to prefer IPv4 to eliminate this as a potential cause.

Alternately, from ssh or a console shell, force the upgrade to use IPv4 manually:

# AZTCO-FW-upgrade -4