Adam21h ago
I'm getting into the IPv6 weeds and I need some help. Can someone explain what the Announce parameter does under [DHCPPrefixDelegation] in systemd-networkd?
I feel like it should mean to announce available /64s out of the /56 received from the ISP so internal routers could use them for their own networks. If it does mean that, I have no idea how to make it work.
I'm just an enthusiast trying to learn, but if anyone could help me out I'd appreciate it.
#selfhosting #linux #networking #ipv6
Show threadMorgan21h ago

@adaroc here's the docs, seems to me this would readvertise the delegated block entirely for a downstream device instead of using one of the subnets for the interface.

> Announce= Takes a boolean. When enabled, and IPv6SendRA= in [Network] section is enabled, the delegated prefixes are distributed through the IPv6 Router Advertisement. This setting will be ignored when the DHCPPrefixDelegation= setting is enabled on the upstream interface. Defaults to yes. Added in version 247.

Show threadAdam
@cereal_cable thanks. Yeah, I've read that and I guess what has me tripped up is the plural "prefixes" rather than the singular prefix assigned to the device.
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