Techinal Tip: How to stop AdvManagedFlag alerts

This article describes how to stop the Event logs flooded with 'RADVD local AdvManagedFlag disagrees with remote site' logs.

RADVD is used for IPv6 auto-configuration and routing. When enabled, messages are sent by the router periodically and in response to solicitations.

A host uses the information to learn the prefixes and parameters for the local network.

Log Description: RADVD local AdvManagedFlag disagrees with remote site
Message: our AdvManagedFlag on wan doesn't agree with fe80::2c8:8bff:fedb:2c22
Type: event
Sub Type: system

If not using IPV6, perform the following steps to stop FortiGate from sending the messages and stop generating the logs:

config system interface
    edit <interface_name>

               config ipv6
            set ip6-send-adv enable <-- Disable this setting.
        end

    next

 end

interface_name is the interface for which the logs are generated.

For Example: In this log message 'our AdvManagedFlag on wan doesn't agree with fe80::2c8:8bff:fedb:2c22' the concerned interface is wan.

Hence the ip6-send-adv must be disabled on the wan interface.