ipv6 unreachables enable

Use ipv6 unreachables enable to enable sending ICMPv6 destination unreachable messages.

Use undo ipv6 unreachables to disable sending ICMPv6 destination unreachable messages.

Syntax

ipv6 unreachables enable

undo ipv6 unreachables enable

Default

Sending ICMPv6 destination unreachable messages is disabled.

Views

System view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

If the device fails to forward a received IPv6 packet because of a destination unreachable error, it performs the following operations:

• Drops the packet.

• Sends an ICMPv6 destination unreachable message to the source.

If the device is generating ICMPv6 destination unreachable messages incorrectly, disable sending ICMPv6 destination unreachable messages to prevent attack risks.

Examples

# Enable sending ICMPv6 destination unreachable messages.

<Sysname> system-view
[Sysname] ipv6 unreachables enable