VMC is 1:1 Nat
VMC have only one ip in vlan1 172.31.4.51
and there are 1:1 NAT in public firewall from 47.104.193.111 to 172.31.4.51
172.31.4.52 we config on loopback, but some people told us maybe this problem so we cancel this ip
(AOS83) [mynode] #show ip interface bri
Interface IP Address / IP Netmask Admin Protocol VRRP-IP
vlan 1 172.31.4.51 / 255.255.240.0 up up
loopback unassigned / unassigned up up
mgmt unassigned / unassigned up up
(AOS83) [mynode] #show ip route
Codes: C - connected, O - OSPF, R - RIP, S - static
M - mgmt, U - route usable, * - candidate default, V - RAPNG VPN/Branch
I - internal, N - not redistributed
Gateway of last resort is Imported from DHCP to network 0.0.0.0 at cost 10
Gateway of last resort is Imported from CELL to network 0.0.0.0 at cost 10
Gateway of last resort is Imported from PPPOE to network 0.0.0.0 at cost 10
Gateway of last resort is 172.31.15.253 to network 0.0.0.0 at cost 1
S* 0.0.0.0/0 [0/1] via 172.31.15.253*
C 172.31.0.0/20 is directly connected, VLAN1