Chapter 46: Command Line Descriptions
STANDARD Revision 1.0 C4® CMTS Release 8.3 User Guide
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configure interface null * ipv6 icmp unreachables
Enables sending ICMP unreachable messages.
configure interface null <number> ipv6 icmp unreachables
configure interface null <number> ipv6 icmp unreachables no
To disable the ICMP unreachables, use the no option.
Parameters
Only valid number is 0 (zero).