The Dell OS10 Router must be configured to suppress Router Advertisements on all external IPv6-enabled interfaces.

Many of the known attacks in stateless autoconfiguration are defined in RFC 3756 were present in IPv4 ARP attacks. To mitigate these vulnerabilities, links that have no hosts connected such as the interface connecting to external gateways must be configured to suppress router advertisements.

This requirement is not applicable for the DODIN Backbone.

Review the router configuration to verify Router Advertisements are not enabled on all external IPv6-enabled interfaces.

Verify the ipv6 nd send-ra setting is not configured. ! interface ethernet1/1/4 ... ipv6 nd send-ra

If the router is not configured to suppress Router Advertisements on all external IPv6-enabled interfaces, this is a finding.

Configure the router to suppress Router Advertisements on all external IPv6-enabled interfaces.

OS10(config)# interface ethernet 1/1/4 OS10(conf-if-eth1/1/4)# no ipv6 nd send-ra