Ipv6 cheatsheet
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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