[systemd-devel] systemd-networkd: no network connectivity with 214/master due to 63a070415db09f5b5bcc5c

[Lennart Poettering]

On Wed, 18.06.14 21:51, Friedrich Kröner (friedrich at mailstation.de) wrote:

> Hello,
> 
> when trying systemd-networkd with >=214 and the following config:
> 
> [Match]
> Name=eth*
> 
> [Network]
> DHCP=yes
> 
> Address=2001:db8::1234:5678/64
> DNS=8.8.8.8
> DNS=2001:db8:1::ab9:C0A8:102
> reverting commit 63a070415db09f5b5bcc5c sd-dhcp-client: allways request 
> broadcast 
> restores the previous behavior. Upon restart of systemd-networkd I get the 
> usual OFFER, REQUEST, ACK confirmation and the IPv6 gets set as well.
> 
> This is on a kvm-machine with virtio_net as module.
> 
> Please let me know if you want me to test anything or need further 
> information.

Interestingly I see the exact same problem over a veth link between a
networkd container and a networkd host... And indeed reverting the
commit you mention makes this work again. Checking with tcpdump it appears as
if sendmsg() while succeeds doesn't have any effect anymore with the
patch applied as no messages is ever seen by tcpdump... seriously weird...

Lennart

-- 
Lennart Poettering, Red Hat