The Nokia router must be configured to advertise a hop limit of at least 32 in Router Advertisement messages for IPv6 stateless auto-configuration deployments.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-283849 | NOKI-RT-000310 | SV-283849r1203796_rule | CCI-000366 | low |
| Description | ||||
| The Neighbor Discovery protocol allows routers to advertise a hop limit value, instead of the standardized default value, in a Router Advertisement message being used by hosts. If a very small value was configured and advertised to hosts on the local area network (LAN) segment, communications would fail due to the hop limit reaching zero before the packets sent by a host reached their destination. | ||||
| STIG | Date | |||
| Nokia Service Router OS 25.x Router Security Technical Implementation Guide | 2026-06-15 | |||
Details
Check Text (C-283849r1203796_chk)
This requirement is not applicable for the DODIN Backbone.
Review the router configuration to determine if the hop limit has been configured for Router Advertisement messages, as shown in the example below:
- show router rtr-advertisement | match "Hop Limit"
Retransmit Time : 00h00m00s0ms Hop Limit : 32
If the hop limit has been configured and has not been set to at least 32, this is a finding.
Fix Text (F-88319r1203795_fix)
Configure the router to advertise a hop limit of at least 32 in Router Advertisement messages, as shown in the example below:
- configure router router-advertisement interface "TO-PE2" current-hop-limit 32