Version 1.3 does not have the "proxy-arp-pvlan" CLI option which is available in version 1.2.5.
1.2.5
set interfaces ethernet eth1 vif 10 ip proxy-arp-pvlan
1.3
vyos@r2-roll# set interfaces ethernet eth0 vif 10 ip Possible completions: arp-cache-timeout ARP cache entry timeout in seconds disable-arp-filter Disable ARP filter on this interface enable-arp-accept Enable ARP accept on this interface enable-arp-announce Enable ARP announce on this interface enable-arp-ignore Enable ARP ignore on this interface enable-proxy-arp Enable proxy-arp on this interface > ospf Open Shortest Path First (OSPF) parameters > rip Routing Information Protocol (RIP) source-validation Policy for source validation by reversed path, as specified in RFC3704 [edit]