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

[Friedrich Kröner]

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


I get lots of DHCP DISCOVER events and it doesn't aquire an IPv4 address, nor 
sets the configured IPv6.

Jun 18 18:44:31 localhost systemd[1]: Starting Network Service...
Jun 18 18:44:31 localhost systemd-networkd[19468]: timestamp of 
'/etc/systemd/network' changed
Jun 18 18:44:31 localhost systemd-networkd[19468]: sd-rtnl: discarding 20 
bytes of incoming message
Jun 18 18:44:31 localhost systemd-networkd[19468]: eth0            : link 3 
added
Jun 18 18:44:31 localhost systemd-networkd[19468]: eth0            : udev 
initialized link
Jun 18 18:44:31 localhost systemd-networkd[19468]: eth0            : flags 
change: +UP +LOWER_UP +RUNNING +MULTICAST +BROADCAST
Jun 18 18:44:31 localhost systemd-networkd[19468]: eth0            : gained 
carrier
Jun 18 18:44:31 localhost systemd-networkd[19468]: could not add new link
Jun 18 18:44:31 localhost systemd-networkd[19468]: lo              : link 1 
added
Jun 18 18:44:31 localhost systemd-networkd[19468]: lo              : udev 
initialized link
Jun 18 18:44:31 localhost systemd-networkd[19468]: lo              : flags 
change: +LOOPBACK +UP +LOWER_UP +RUNNING
Jun 18 18:44:31 localhost systemd-networkd[19468]: lo              : gained 
carrier
Jun 18 18:44:31 localhost systemd[1]: Started Network Service.
Jun 18 18:44:31 localhost systemd-networkd[19468]: eth0            : link 
state is up-to-date
Jun 18 18:44:31 localhost systemd-networkd[19468]: eth0            : found 
matching network '/etc/systemd/network/80-dhcp.network'
Jun 18 18:44:31 localhost systemd-networkd[19468]: eth0            : acquiring 
DHCPv4 lease
Jun 18 18:44:31 localhost systemd-networkd[19468]: DHCP CLIENT (0x3ddf8f7): 
STARTED on ifindex 3 with address 52:54:e4:d2:24:44
Jun 18 18:44:31 localhost systemd-networkd[19468]: Sent message 
type=method_call sender=n/a destination=org.freedesktop.DBus 
object=/org/freedesktop/DBus interface=org.freedesktop.DBus member=Hello 
cookie=1 reply_cookie=0 error=n/a
Jun 18 18:44:31 localhost systemd-networkd[19468]: DHCP CLIENT (0x3ddf8f7): 
DISCOVER
Jun 18 18:44:31 localhost systemd-networkd[19468]: lo              : getting 
address failed: Device or resource busy
Jun 18 18:44:31 localhost systemd-networkd[19468]: lo              : link 
state is up-to-date
Jun 18 18:44:31 localhost systemd-networkd[19468]: lo              : unmanaged
Jun 18 18:44:31 localhost systemd-networkd[19468]: sd-rtnl: discarding 20 
bytes of incoming message
Jun 18 18:44:31 localhost systemd-networkd[19468]: eth0            : added 
address: fe80::5054:e4ff:fed2:2444/64
Jun 18 18:44:31 localhost systemd-networkd[19468]: rtnl: received address for 
a nonexistent link, ignoring
Jun 18 18:44:31 localhost systemd-networkd[19468]: lo              : added 
address: ::1/128
Jun 18 18:44:31 localhost systemd-networkd[19468]: eth0            : added 
address: 123.23.23.21/22
Jun 18 18:44:31 localhost systemd-networkd[19468]: lo              : added 
address: 127.0.0.1/8
Jun 18 18:44:31 localhost systemd-networkd[19468]: Got message 
type=method_return sender=org.freedesktop.DBus destination=:1.45 object=n/a 
interface=n/a member=n/a cookie=1 reply_cookie=1 error=n/a 
Jun 18 18:44:31 localhost systemd-networkd[19468]: Got message type=signal 
sender=org.freedesktop.DBus destination=:1.45 object=/org/freedesktop/DBus 
interface=org.freedesktop.DBus member=NameAcquired cookie=2 reply_cookie=0 
error=n/a
Jun 18 18:44:33 localhost systemd-networkd[19468]: DHCP CLIENT (0x3ddf8f7): 
DISCOVER
Jun 18 18:44:34 localhost systemd-networkd[19468]: DHCP CLIENT (0x3ddf8f7): 
DISCOVER
Jun 18 18:44:38 localhost systemd-networkd[19468]: DHCP CLIENT (0x3ddf8f7): 
DISCOVER
Jun 18 18:44:46 localhost systemd-networkd[19468]: DHCP CLIENT (0x3ddf8f7): 
DISCOVER
Jun 18 18:45:02 localhost systemd-networkd[19468]: DHCP CLIENT (0x3ddf8f7): 
DISCOVER
Jun 18 18:45:33 localhost systemd-networkd[19468]: DHCP CLIENT (0x3ddf8f7): 
DISCOVER
Jun 18 18:46:36 localhost systemd-networkd[19468]: DHCP CLIENT (0x3ddf8f7): 
DISCOVER
Jun 18 18:47:41 localhost systemd-networkd[19468]: DHCP CLIENT (0x3ddf8f7): 
DISCOVER
Jun 18 18:48:44 localhost systemd-networkd[19468]: DHCP CLIENT (0x3ddf8f7): 
DISCOVER

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.
Thank you,
Friedrich Kröner