set protocols bgp 65001 neighbor 10.0.0.2 disable-send-community extended
set protocols bgp 65001 neighbor 10.0.0.2 disable-send-community standard
set protocols bgp 65001 neighbor 10.0.0.2 remote-as '65002'

!
router bgp 65001
 neighbor 10.0.0.2 remote-as 65002
!

'protocols bgp var neighbor var address-family ipv4-unicast disable-send-community' => {
    set => undef,
    del => undef,
},
'protocols bgp var neighbor var address-family ipv4-unicast disable-send-community extended' => {
    set => 'router bgp #3 ; address-family ipv4 unicast ; no neighbor #5 send-community extended',
    del => 'router bgp #3 ; address-family ipv4 unicast ; neighbor #5 send-community extended',
},

vyos@r4-roll# set protocols bgp 65001 neighbor 10.0.0.2 address-family ipv4-unicast 
Possible completions:
 > allowas-in   Accept a IPv4-route that contains the local-AS in the as-path
   as-override  AS for routes sent to this neighbor to be the local AS
 > attribute-unchanged
                BGP attributes are sent unchanged (IPv4)
 > capability   Advertise capabilities to this neighbor (IPv4)
 > default-originate
                Send default IPv4-route to this neighbor
 > distribute-list
                Access-list to filter IPv4-route updates to/from this neighbor
 > filter-list  As-path-list to filter IPv4-route updates to/from this neighbor
   maximum-prefix

vyos@r4-roll# set protocols bgp 65001 neighbor 10.0.0.2 address-family ipv6-unicast disable-send-community extended

!
router bgp 65001
 neighbor 10.0.0.2 remote-as 65002
 !
 address-family ipv6 unicast
  neighbor 10.0.0.2 activate
  no neighbor 10.0.0.2 send-community extended
 exit-address-family
!