vyos@vyos# set protocols ospf area 0 virtual-link
Possible completions:
 > <x.x.x.x>            OSPF area in dotted decimal notation
 >


[edit]
vyos@vyos# set protocols ospf area 0 virtual-link 0
[edit]
vyos@vyos# commit

vtysh failed to process new configuration: vtysh (mark file) exited with
status 2: b'line 30: % Unknown command:  area 0 virtual-link 0 hello-
interval 10 retransmit-interval 5 transmit-delay 1 dead-interval 40\n\n'

[[protocols ospf]] failed
Commit failed
[edit]