Enabling sending ICMPv6 destination unreachable messages

About sending ICMPv6 destination unreachable messages

The device sends the source the following ICMPv6 destination unreachable messages:

Restrictions and guidelines

An ICMPv6 destination unreachable message indicates that the destination is not reachable from the source device. Attackers can launch malicious attacks to make the device generate incorrect ICMPv6 destination unreachable messages, which will affect the function of the network. To protect the network from malicious attacks and decrease unnecessary network traffic, you can disable the sending of ICMPv6 destination unreachable messages.

Procedure

  1. Enter system view.

    system-view

  2. Enable sending ICMPv6 destination unreachable messages.

    ipv6 unreachables enable

    By default, this feature is disabled.