Scenario.
Existing IPv6 connection using freenet6. Connect new ISP with native IPv6 support. Disable Freenet6 Broker, but do not remove configuration.
Broker link goes down, but broker stays up. UTM continually tries to read the broker configuration file.
2012:05:30-23:31:45 cats-kingdom radvd[7614]: resuming normal operation
2012:05:30-23:31:45 cats-kingdom radvd[7614]: attempting to reread config file
2012:05:30-23:31:45 cats-kingdom radvd[7614]: resuming normal operation
2012:05:30-23:31:45 cats-kingdom radvd[7614]: attempting to reread config file
2012:05:30-23:31:45 cats-kingdom radvd[7614]: resuming normal operation
2012:05:30-23:31:45 cats-kingdom radvd[7614]: attempting to reread config file
I have not tried removing the broker configuration yet. Haven't actually got traffic to go over the new link yet. More experimentation tonight.
Ian