To reproduce use:
set protocols static multicast route 192.168.0.0/16 next-hop 1.2.3 commit
Throws:
Traceback (most recent call last):
File "/usr/libexec/vyos/conf_mode/protocols_static_multicast.py", line 130, in <module>
verify(c)
File "/usr/libexec/vyos/conf_mode/protocols_static_multicast.py", line 92, in verify
raise ConfigError(route + " not a multicast network")
~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
TypeError: can only concatenate list (not "str") to list