vyos@r11-roll# compare 
[edit interfaces]
+vxlan vxlan22 {
+    group 239.1.1.1/24
+    source-interface eth2
+    vni 22
+}
[edit]
vyos@r11-roll# commit
[ interfaces vxlan vxlan22 ]
WARNING: RFC7348 recommends VXLAN tunnels preserve a 1500 byte MTU
VyOS had an issue completing a command.

We are sorry that you encountered a problem while using VyOS.
There are a few things you can do to help us (and yourself):
- Contact us using the online help desk if you have a subscription:
  https://support.vyos.io/
- Make sure you are running the latest version of VyOS available at:
  https://vyos.net/get/
- Consult the community forum to see how to handle this issue:
  https://forum.vyos.io
- Join us on Slack where our users exchange help and advice:
  https://vyos.slack.com

When reporting problems, please include as much information as possible:
- do not obfuscate any data (feel free to contact us privately if your 
  business policy requires it)
- and include all the information presented below

Report time:      2021-12-02 15:33:29
Image version:    VyOS 1.4-rolling-202111290926
Release train:    sagitta

Built by:         autobuild@vyos.net
Built on:         Mon 29 Nov 2021 09:26 UTC
Build UUID:       3c772f2c-5530-46b0-ae93-a91e4b0066e9
Build commit ID:  ff15b6b63ecf87

Architecture:     x86_64
Boot via:         installed image
System type:      KVM guest

Hardware vendor:  QEMU
Hardware model:   Standard PC (Q35 + ICH9, 2009)
Hardware S/N:     
Hardware UUID:    8e21d64e-e498-475c-9866-290cd53a3b86

Traceback (most recent call last):
  File "/usr/libexec/vyos/conf_mode/interfaces-vxlan.py", line 114, in <module>
    apply(c)
  File "/usr/libexec/vyos/conf_mode/interfaces-vxlan.py", line 103, in apply
    v = VXLANIf(**vxlan)
  File "/usr/lib/python3/dist-packages/vyos/ifconfig/interface.py", line 318, in __init__
    self._create()
  File "/usr/lib/python3/dist-packages/vyos/ifconfig/vxlan.py", line 79, in _create
    self._cmd(cmd.format(**self.config))
  File "/usr/lib/python3/dist-packages/vyos/ifconfig/control.py", line 52, in _cmd
    return cmd(command, self.debug)
  File "/usr/lib/python3/dist-packages/vyos/util.py", line 161, in cmd
    raise OSError(code, feedback)
PermissionError: [Errno 1] failed to run command: ip link add vxlan22 type vxlan id 22 dstport 8472 dev eth2 group 239.1.1.1/24 tos inherit ttl 16
returned: 
exit code: 1

noteworthy:
cmd 'ip link add vxlan22 type vxlan id 22 dstport 8472 dev eth2 group 239.1.1.1/24 tos inherit ttl 16'
returned (out):

returned (err):
Error: any valid address is expected rather than "239.1.1.1/24".

[[interfaces vxlan vxlan22]] failed
Commit failed
[edit]
vyos@r11-roll#