Adding a static ARP entry in a Virtual System does not survive reboot:
HostName:0> set virtual-system <VSID>
HostName:VSID> add arp static ipv4-address IP_ADDRESS macaddress MAC_ADDRESS
HostName:VSID> save config
[Expert@HostName:VSID]# grep ip:arp:entry:static:instance
[Expert@HostName:VSID]# arp -an
/var/log/messages file shows during the boot: arp_xlate: failed to update the arp with err: 101 Network is unreachable
arp_xlate: failed to update the arp with err: 101 Network is unreachable
Linux kernel might add static ARP entry for the involved network before that network becomes reachable.