Ipv6 cheatsheet

RA flags :

• M Managed Address Configuration flag. If set indicates host should use stateful configuration (e.g. DHCPv6) for address data.
• O Other Configuration flag. Indicates "other" information (such as DNS server addresses) is available using stateful configuration (e.g. DHCPv6).
• A autonomous address-configuration flag. When set indicates that this prefix can be used for stateless autoconfiguration.

pfsense RA configuration :

• Router Only: Clients will need to set addresses statically
• Unmanaged: Client addresses obtained only via Stateless Address Autoconfiguration (SLAAC).
• Managed: Client addresses assigned only via DHCPv6.
• Assisted: Client addresses assigned by either DHCPv6 or SLAAC (or both).

Show RA : tcpdump -v -n -i ens18 icmp6 and ip6[40] == 134