vyos@r1# set service webproxy 
Possible completions:
   append-domain
                Default domain name
 > authentication
                Proxy Authentication Settings
+> cache-peer   Specify other caches in a hierarchy
   cache-size   Disk cache size in MB (default: 100)
   default-port Default Proxy Port (default: 3128)
   disable-access-log
                Disable logging of HTTP accesses
+  domain-block Domain name to block
+  domain-noncache
                Domain name to access without caching
+> listen-address
                IPv4 listen-address for WebProxy [REQUIRED]
   maximum-object-size
                Maximum size of object to be stored in cache in kilobytes
   mem-cache-size
                Memory cache size in MB
   minimum-object-size
                Maximum size of object to be stored in cache in kilobytes
   outgoing-address
                Outgoing IP address for webproxy
+  reply-block-mime
                MIME type to block
   reply-body-max-size
                Maximum reply body size in KB
 > url-filtering
                URL filtering settings

set interfaces tunnel tun1 encapsulation 'gre'
set interfaces tunnel tun1 remote '203.0.113.254'
set interfaces tunnel tun1 source-address '203.0.113.1'

vyos@r1# set firewall group network-group NG network 198.51.100.0/24
[edit]
vyos@r1# commit
[edit]
vyos@r1# set firewall group network-group NG network 198.51.100.99/32
[edit]
vyos@r1# commit
[edit]
vyos@r1#

r1(config-router)# neighbor eth1 interface peer-group

vyos@r1# set protocols bgp 65001 neighbor eth1 interface peer-group 
Possible completions:
   <text>       peer group for this peer