[systemd-devel] systemd-networkd -- Unable to create VLAN device

[James Lott]

Hello again!

I've been eager to play with networking features, in case you couldn't tell ;) 
This patricular issue seems separate from my first one though, so I thought it 
would be best to discuss separately.

I am trying to use systemd-networkd to essentially replace vconfig. I am using 
eth0 as a trunked link and am trying to setup a pair of VLAN devices to 
receive the taged frames. It seems that the VLAN netdevs are silently failing 
to be created.

Sep 19 09:47:34 utility01 systemd[1]: Starting Network Service...
Sep 19 09:47:34 utility01 systemd-networkd[776]: 
[/etc/systemd/network/vlan1.network:6] VLAN could not be found, ignoring 
assignment: 1
Sep 19 09:47:34 utility01 systemd-networkd[776]: 
[/etc/systemd/network/vlan0.network:6] VLAN could not be found, ignoring 
assignment: 0
Sep 19 09:47:34 utility01 systemd-networkd[776]: 
[/etc/systemd/network/eth0.network:6] VLAN could not be found, ignoring 
assignment: 1
Sep 19 09:47:34 utility01 systemd-networkd[776]: 
[/etc/systemd/network/eth0.network:7] VLAN could not be found, ignoring 
assignment: 0
Sep 19 09:47:34 utility01 systemd-networkd[776]: eth0.0          : gained 
carrier
Sep 19 09:47:34 utility01 systemd-networkd[776]: eth0            : gained 
carrier
Sep 19 09:47:34 utility01 systemd-networkd[776]: lo              : gained 
carrier
Sep 19 09:47:34 utility01 systemd[1]: Started Network Service.

Although I strongly believe this to be an error I am making somewhere, I have 
read and re-read all of the systemd-networkd man pages, and cannot for the 
life of me figure out where I went wrong. Any help is much appreciated! 
Additional environment information is included below.

[root at utility01 network]# uname -a
Linux utility01 3.12.26-2-ARCH #1 PREEMPT Sun Aug 31 22:36:40 MDT 2014 armv6l 
GNU/Linux
[root at utility01 network]# pacman -Q systemd
systemd 216-3
[root at utility01 network]# lsmod | grep 8021q
8021q                  20658  0 
garp                    6303  1 8021q
mrp                     8249  1 8021q

[root at utility01 network]# pwd
/etc/systemd/network
[root at utility01 network]# for f in *; do echo; echo "---------- $f"; echo; cat 
$f; done

---------- eth0.network

[Match]
Name=eth0

[Network]
DHCP=v4
VLAN=1
VLAN=0

---------- vlan0.netdev

[NetDev]
Name=vlan0
Kind=vlan

[VLAN]
Id=0

---------- vlan0.network

[Match]
Name=vlan0

[Network]
DHCP=v4
VLAN=0

---------- vlan1.netdev

[NetDev]
Name=vlan1
Kind=vlan

[VLAN]
Id=1

---------- vlan1.network

[Match]
Name=vlan1

[Network]
DHCP=v4
VLAN=1
[root at utility01 network]# ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode 
DEFAULT group default 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: ifb0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT group 
default qlen 32
    link/ether 3e:ff:bc:28:42:cb brd ff:ff:ff:ff:ff:ff
3: ifb1: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT group 
default qlen 32
    link/ether 3a:65:88:fc:ab:27 brd ff:ff:ff:ff:ff:ff
4: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP 
mode DEFAULT group default qlen 1000
    link/ether b8:27:eb:9d:3a:06 brd ff:ff:ff:ff:ff:ff
5: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT 
group default qlen 1000
    link/ether 64:66:b3:20:04:f5 brd ff:ff:ff:ff:ff:ff
6: eth0.0 at eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state 
UP mode DEFAULT group default 
    link/ether b8:27:eb:9d:3a:06 brd ff:ff:ff:ff:ff:ff

NOTE: The existing eth0.0 was created using vconfig, which I created simply to 
get this machine back on the network while I troubleshooted my issue.