Re: systemd-networkd: IPv6 prefix delegation disabled by ipv6forwarding=true

[Max Gautier <mg@xxxxxxxxxxxxxxxx>]

I have similar setup (PPPoE, /48 delegation) here are my network files:
(It's been a while, I don't remember the reason for everything)

==> /etc/systemd/network/10-extern0.link <==
[Match]
Path=platform-fe300000.ethernet

[Link]
Name=extern0

==> /etc/systemd/network/10-extern0.network <==
[Match]
Name=extern0

[Link]
RequiredForOnline=degraded

==> /etc/systemd/network/10-intern0.link <==
[Match]
Path=platform-f8000000.pcie-pci-0000:01:00.0

[Link]
Name=intern0

==> /etc/systemd/network/10-router.network <==
[Match]
Name=intern0

[Network]
Address=192.168.72.1/24
DHCPServer=true
IPMasquerade=ipv4
IPv6AcceptRA=no
IPv6SendRA=yes
DHCPPrefixDelegation=yes
MulticastDNS=resolve

[DHCPServer]
PoolOffset=100
PoolSize=100
EmitDNS=yes
DNS=_server_address

[IPv6SendRA]
DNS=fd07::c09b:1fff:fe46:836e

[IPv6Prefix]
Prefix=fd07::/64
Assign=true

[Link]
RequiredForOnline=no

==> /etc/systemd/network/ppp.network <==
[Match]
Kind=ppp

[Network]
DHCP=yes
KeepConfiguration=yes # I think this was because systemd was messing
with the IPv4 config set up by ppp
IPv4Forwarding=yes
IPv6Forwarding=yes
IPv6AcceptRA=yes

-- 
Max Gautier