networkd: send a dhcpv6 prefix delegation request

[contact@xxxxxxxxxx (Anthony Bourguignon)]

Hello,

Is there a way to send a prefix delegation request when using networkd
as a dhcpv6 client ?

Here is my current configuration :
[Match]
Name=ens3
[Network]
DHCP=ipv6
IPv6AcceptRA=True
Address=xxx:xxx/64
[Address]
Address=xxx.xxx/32
[Route]
Gateway=62.210.0.1
GatewayOnlink=yes
[DHCP]
DUIDType=link-layer
DUIDRawData=00:01:xx:xx:xx:xx:xx:xx
[IPv6AcceptRA]
UseDNS=False
UseDomains=False

All I can see are inf-req packets, without prefix delegation :
15:55:31.987291 IP6 (flowlabel 0x74546, hlim 1, next-header UDP (17)
payload length: 46) xxx:xxx.546 > ff02::1:2.547: [bad udp cksum 0xec16
-> 0x93b8!] dhcp6 inf-req (xid=adc003 (option-request DNS-server DNS-
search-list NTP-server SNTP-servers rapid-commit) (client-ID hwaddr
type 1 xxxxxxxxxxxx) (elapsed-time 65535))

Another question : why inf-req ? When I start clients like dibbler (the
one I use while waiting for networkd to work as expected on my
provider's network), it sends solicit packets.

Thanks