Netgear XCM8806 Chassis Hardware Installation Guide - Page 906

NETGEAR 8800 Chassis Switch CLI Manual Example The following command adds a static route to the routing table: configure iproute add 2001:db8:0:1111::/64 fe80::1111%default configure iproute add blackhole configure iproute add blackhole {ipv6} [] {vr } {multicast-only | unicast-only} Description Adds a blackhole address to the routing table. All traffic destined for a configured blackhole IP address is silently dropped. Syntax Description ipv6Netmask vrname multicast-only unicast-only Specifies an IPv6 address/prefix length. Specifies the virtual router to which the route is added. Specifies only multicast traffic for the route. Specifies only unicast traffic for the route. Default If you do not specify a virtual router, the current virtual router context is used. Usage Guidelines A blackhole entry directs packets with a matching specified address prefix to be discarded. Blackhole entries are useful as a security measure or in special circumstances where a specific destination address must be discarded. Blackhole entries are treated like permanent entries in the event of a switch reset or power off/on cycle. The packets are silently discarded. In other words, no ICMP message is sent to indicate that the packets are discarded. Example The following command causes packets with a destination address of 2001:db8::3452 to be silently discarded: configure iproute add blackhole 2001:db8::3452/128 configure iproute add blackhole ipv6 default configure iproute add blackhole ipv6 default {vr } {multicast-only | unicast-only} 906 | Chapter 20. IPv6 Unicast Commands