Am 05.09.22 um 19:45 schrieb Arian van Putten:
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?
Yes, RA are being sent as ll multicast. But the interface does have a
valid link local address. LinkLocalAddressing= refers to
autoconfiguration (according to the documentation on freedesktop), not
to the disablement of link local adresses.
A link local address ist of course required, I just happen to configure
it manually, not via autoconfiguration.
Unless I miss something fundamentally, this looks more and more like a bug.
Either we need a LinkLocalAddressing=ipv6manual option or it should be
checked, wether a valid scope local address is being provided later on.
But of course, I may be wrong
On Mon, 5 Sept 2022, 19:14 Ede Wolf, <listac@xxxxxxxxxxxxxxxx
<mailto:listac@xxxxxxxxxxxxxxxx>> wrote:
Am 05.09.22 um 18:34 schrieb Ede Wolf:
> Hello,
>
> For a simple setup, I've tried to replace radvd with systemds
> IPv6SendRA=true.
>
> Now the link supposed to send the RA of course has both a fixed
local as
> well as fixed global (ULA) address. As it happens to be the
default gw
> as well.
>
> Since the local address is being configured manually,
> LinkLocalAddressing is consequently set to no
>
>
> Now networkd complains, from the journal:
>
> IPv6PrefixDelegation= is enabled but IPv6 link-local addressing is
> disabled. Disabling IPv6PrefixDelegation=.
>
>
> Not sure what I am overlooking, but the SendRA is meant for other
> clients, not for this link. Otherwise I would have set
IPv6AcceptRA to
> true, not IPv6SendRA.
>
> What am I misinterpreting here?
>
> Thanks
>
> Ede
I may have mixed up terms, something that, however, does not make
things
more comprehendable to me.
I am not using DHCPv6, I would just like to announce the prefix via RA
to other clients on that link. So prefix delegation is likely something
else. I've just concluded that from the journal message.
However, my .network file has no DHCPv6 related stanzas:
[Match]
Name=brlan
[Link]
MACAddress=02:...
RequiredForOnline=yes
[Network]
Description=Bridge
LinkLocalAddressing=no
IPForward=ipv4
IPForward=ipv6
IPv6AcceptRA=no
ConfigureWithoutCarrier=true
IgnoreCarrierLoss=true
DHCPServer=yes
IPv6AcceptRA=false
IPv6SendRA=true
[Address]
Address=192.168.38.1/24 <http://192.168.38.1/24>
[Address]
Address=fe80::38:1/64
Scope=link
[Address]
Address=fde3:8b13:f1a5:38::1/64
Scope=global
[DHCPServer]
PoolOffset=200
PoolSize=32
EmitNTP=yes
NTP=192.168.38.101
[IPv6SendRA]
Managed=no
OtherInformation=no
[IPv6Prefix]
AddressAutoconfiguration=true
Prefix=fde3:8b13:f1a5:38::/64
