Hello
I have a laboratory with a pfsense firewall as a gateway and 2 cisco routers with ospf connecting each other and a switch each one.
I have a public IPV4 assigned to the external firewall interface and 192.168.1.1 to the internal nic. One cisco router (the closer). Has 3 vlans.
Vlan 10 native 192.168.1.5 which allow me to get access outside through the firewall
Vlan 30 192.168.30.5
Vlan 40 192.168.40.5
Then, I have and interface between router 1 and 2 with ospf configured. Ip 101.10.10.1 router 1 and 101.10.10.2 router 2. Then, router 2 use 2 vlan
Vlan 10 172.16.10.5
Vlan 40 172.16.40.5
Firewall-----192.168.1.5 router 10.10.10.1------ospf-----10.10.10.2 router2 172.16.10.5
So, I have to move to ipv6.
On the pfsense I got a global IP using dhcp
The IP start by 2607:x:x:x: network. I show only x for security reason
And host x:x:x:246d /64
So, my guess was that I can take the first 4 nibbles from the network and change the host for each IPv4
2607:x:x:x::5 for native
2607:x:x:y::5 for vlan 30. I modified the nibble y. For instance if the nibble was 27f, the next one I select 28a and so on for each vlan
My question is, how do I know that I won’t get conflict with another global IP around the world?
Could I use global for my device inside the laboratory?
Is there any range the provider gives me for global?
If I used unique IP, can I get access to internet from a device inside my network?
thanks,
Jose
