[systemd-devel] systemd-networkd not sending DHCP v6 requests

[Lennart Poettering]

On Mon, 10.07.17 22:23, Ian Pilcher (arequipeno at gmail.com) wrote:

> I'm playing using systemd-networkd (rather than the legacy network
> service) on my Banana Pi CentOS 7 firewall.  (See the "Bouncing
> interface once chrony is synced" thread for background.)
> 
> I have "DHCP=yes" in the [Network] section of my WAN interface
> (eth0.256.network):
> 
>  [Match]
>  Name=eth0.256
> 
>  [Network]
>  DHCP=yes
>  IPForward=yes
>  #IPv6AcceptRA=yes - Not supported in v219
> 
>  [DHCP]
>  UseHostname=no
> 
> For some reason, though, only the IPv4 DHCP request is being sent.  I
> have verified with tcpdump that no "dhcp6 solicit" packets are ever
> sent.

Note that DHCPv6 is not done unless IPv6 RA packets tell networkd to
do so. Hence, areyou sure the RA spoken on your network properly
indicates that?

Lennart

-- 
Lennart Poettering, Red Hat