The RUCKUS ICX Router must be configured to advertise a hop limit of at least 32 in Router Advertisement messages for IPv6 stateless autoconfiguration deployments.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-273665 | RCKS-RTR-001020 | SV-273665r1110904_rule | CCI-000366 | low |
| Description | ||||
| The Neighbor Discovery protocol allows a hop limit value to be advertised by routers in a Router Advertisement message being used by hosts instead of the standardized default value. If a very small value was configured and advertised to hosts on the LAN segment, communications would fail due to the hop limit reaching zero before the packets sent by a host reached its destination. | ||||
| STIG | Date | |||
| RUCKUS ICX Router Security Technical Implementation Guide | 2025-06-03 | |||
Details
Check Text (C-273665r1110904_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 (default value = 64).
Ipv6 hop-limit xx
If it has been configured and has not been set to at least "32", it is a finding.
Fix Text (F-77661r1110777_fix)
Configure the router to advertise a hop limit of at least "32" in Router Advertisement messages:
ICX(config)#ipv6 hop-limit xx
(Decimal between 32 and 255)