<div dir="auto">Just thinking out loud here but aren't RA messages are sent as link local multicast messages? How can it send them if you disable link local addressing?</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, 5 Sept 2022, 19:14 Ede Wolf, <<a href="mailto:listac@nebelschwaden.de" target="_blank" rel="noreferrer">listac@nebelschwaden.de</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Am 05.09.22 um 18:34 schrieb Ede Wolf:<br>
> Hello,<br>
> <br>
> For a simple setup, I've tried to replace radvd with systemds <br>
> IPv6SendRA=true.<br>
> <br>
> Now the link supposed to send the RA of course has both a fixed local as <br>
> well as fixed global (ULA) address. As it happens to be the default gw <br>
> as well.<br>
> <br>
> Since the local address is being configured manually, <br>
> LinkLocalAddressing is consequently set to no<br>
> <br>
> <br>
> Now networkd complains, from the journal:<br>
> <br>
> IPv6PrefixDelegation= is enabled but IPv6 link-local addressing is <br>
> disabled. Disabling IPv6PrefixDelegation=.<br>
> <br>
> <br>
> Not sure what I am overlooking, but the SendRA is meant for other <br>
> clients, not for this link. Otherwise I would have set IPv6AcceptRA to <br>
> true, not IPv6SendRA.<br>
> <br>
> What am I misinterpreting here?<br>
> <br>
> Thanks<br>
> <br>
> Ede<br>
<br>
I may have mixed up terms, something that, however, does not make things <br>
more comprehendable to me.<br>
I am not using DHCPv6, I would just like to announce the prefix via RA <br>
to other clients on that link. So prefix delegation is likely something <br>
else. I've just concluded that from the journal message.<br>
<br>
However, my .network file has no DHCPv6 related stanzas:<br>
<br>
[Match]<br>
Name=brlan<br>
<br>
[Link]<br>
MACAddress=02:...<br>
RequiredForOnline=yes<br>
<br>
[Network]<br>
Description=Bridge<br>
LinkLocalAddressing=no<br>
IPForward=ipv4<br>
IPForward=ipv6<br>
IPv6AcceptRA=no<br>
ConfigureWithoutCarrier=true<br>
IgnoreCarrierLoss=true<br>
DHCPServer=yes<br>
IPv6AcceptRA=false<br>
IPv6SendRA=true<br>
<br>
[Address]<br>
Address=<a href="http://192.168.38.1/24" rel="noreferrer noreferrer noreferrer" target="_blank">192.168.38.1/24</a><br>
<br>
[Address]<br>
Address=fe80::38:1/64<br>
Scope=link<br>
<br>
[Address]<br>
Address=fde3:8b13:f1a5:38::1/64<br>
Scope=global<br>
<br>
[DHCPServer]<br>
PoolOffset=200<br>
PoolSize=32<br>
EmitNTP=yes<br>
NTP=192.168.38.101<br>
<br>
[IPv6SendRA]<br>
Managed=no<br>
OtherInformation=no<br>
<br>
[IPv6Prefix]<br>
AddressAutoconfiguration=true<br>
Prefix=fde3:8b13:f1a5:38::/64<br>
<br>
</blockquote></div>