The Nokia perimeter router must be configured to suppress Router Advertisements on all external IPv6-enabled interfaces.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-283876 | NOKI-RT-000580 | SV-283876r1204032_rule | CCI-000366 | medium |
| Description | ||||
| Many of the known attacks in stateless autoconfiguration are defined in RFC 3756 and 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. | ||||
| STIG | Date | |||
| Nokia Service Router OS 25.x Router Security Technical Implementation Guide | 2026-06-15 | |||
Details
Check Text (C-283876r1204032_chk)
This requirement is not applicable for the DODIN Backbone.
Review the router configuration to verify Router Advertisements are suppressed on all external IPv6-enabled interfaces.
Use the command below and verify for each interface the "RtrAdvertisement Tx" value:
- show router rtr-advertisement
Router Advertisement
Interface: TO-PE2
-------------------------------------------------------------------------------
Rtr Advertisement Tx : 4 Last Sent : 00h05m01s
Nbr Solicitation Tx : 3097 Last Sent : 00h00m53s
Nbr Advertisement Tx : 3078 Last Sent : 00h00m53s
Rtr Advertisement Rx : 0 Rtr Solicitation Rx : 0
Nbr Advertisement Rx : 3095 Nbr Solicitation Rx : 3078
-------------------------------------------------------------------------------
Max Advert Interval : 600 Min Advert Interval : 200
Managed Config : FALSE Other Config : FALSE
Reachable Time : 00h00m00s0ms Router Lifetime : 00h30m00s
Retransmit Time : 00h00m00s0ms Hop Limit : 64
Link MTU : 0 ND Router Preference : medium
MAC Addr To Use : Interface
Creation Origin : manual
No Prefixes
If the router is not configured to suppress Router Advertisements on all external IPv6-enabled interfaces, this is a finding.
Fix Text (F-88346r1204031_fix)
Configure the router to suppress Router Advertisements on all external IPv6-enabled interfaces, as shown in the example below:
- configure router router-advertisement interface "TO-PE2" shutdown