On 14.11.2022 15:49, Lukas Wolf wrote:
Hi all and thanks a lot for all your work on systemd!
I'm trying to setup a VXLAN configuration with multicast with
systemd-networkd but struggle to make it work. What I'm trying to replicate
is the following (working command):
ip link add vxlan100 type vxlan id 100 dstport 4789 local 10.100.200.4
group 224.4.0.144 dev lo ttl 5
(this command fails without specifying 'dev lo')
My config file, vxlan100.netdev:
[NetDev]
Name=vxlan100
Kind=vxlan
[VXLAN]
VNI=100
TTL=5
DestinationPort=4789
Group=224.0.0.144
Local=10.100.200.4
Independent=true
If you want Group you need device and so cannot use Independent
...
As seen in the last line of the log, it throws an invalid argument error
and no VXLAN device is created. This does not happen if I remove the
"Group=" part in the configuration. As mentioned above, the "ip add link"
command needs a "dev=" argument to work but I have not found a way to
specify a device in the netdev config file...
I have also tried it without Independent=true and having a network file
instead with VXLAN=vxlan100,
Wat do you mean "instead"? You need network file for base interface that
refers to vxlan and netdev file for vxlan.
but then it just silently fails without log
output.
Works for me (at least, to the extent that vxlan100 is created)
bor@bor-Latitude-E5450:~$ ip l
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode
DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eno1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel
state DOWN mode DEFAULT group default qlen 1000
link/ether 34:e6:d7:85:0b:1c brd ff:ff:ff:ff:ff:ff
altname enp0s25
3: wlp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
state UP mode DORMANT group default qlen 1000
link/ether 5c:e0:c5:27:c7:70 brd ff:ff:ff:ff:ff:ff
4: br0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state
DOWN mode DEFAULT group default qlen 1000
link/ether 6a:7b:d1:2a:ce:9d brd ff:ff:ff:ff:ff:ff
5: tap0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel
master br0 state DOWN mode DEFAULT group default qlen 1000
link/ether 2a:7d:ac:33:fd:47 brd ff:ff:ff:ff:ff:ff
bor@bor-Latitude-E5450:~$ sudo systemctl start systemd-networkd.service
bor@bor-Latitude-E5450:~$ ip l
...
13: vxlan100: <BROADCAST,MULTICAST> mtu 1450 qdisc noop state DOWN mode
DEFAULT group default qlen 1000
link/ether b6:1d:97:9f:e6:eb brd ff:ff:ff:ff:ff:ff
bor@bor-Latitude-E5450:~$ cat /etc/systemd/network/eno1.network
[Match]
Name=eno1
[Link]
ActivationPolicy=always-up
[Network]
ConfigureWithoutCarrier=true
Address=10.10.10.10/24
VXLAN=vxlan100
bor@bor-Latitude-E5450:~$ cat /etc/systemd/network/vxlan100.netdev
[NetDev]
Name=vxlan100
Kind=vxlan
[VXLAN]
VNI=100
TTL=5
DestinationPort=4789
Group=224.0.0.144
Local=10.10.10.10
bor@bor-Latitude-E5450:~$
