How to capture/sniff ICMPv6 traffic on MikroTik RouterOS

Problem:

On RouterOS up to at least v7.4.1 you can’t select ICMPv6 as IP protocol in the Tools -> Packet Sniffer If you select icmp, you will not sniff any ICMPv6 traffic.

Solution

The solution is to enter the ICMPv6 IP protocol ID - 58 - into the IP protocol field manually:

After that, ensure that you apply the settings. You can start sniffing ICMPv6 traffic immediately.