Good day all,
I’m planning a move over from IPv4 to a IPv6/IPv4 dual stack network. Unfortunately some devices (old paper printers and 3D printers) force continued use of IPv4. I’m reading up what I can - and have a book on order - but knowing the right terms to search would really help!
Situation:
I have a small network that I’m using as a learning tool. The DNS/DHCP/internet gateway server is connected via ethernet to a 5G modem, and in turn connected to three subnets splitting the connected devices into trusted clients, machines, and a wifi access point. On the server there are many services running including dnsmasq (DNS & DHCP), openvpn, mosquitto (for handling MQTT messages), nftables firewall, and a fileserver.
I would ultimately like to have the server able to connect to the internet via a number of methods, including the existing ethernet mobile 5G router, via a phone’s wifi hotspot, and possibly via a public wifi in the case of other failures.
Questions:
On my IPv4 network I like the use of masqurade to hide the number of clients connecting to the internet from the 5G modem, or phone. I get the impression that this sort of NAT/masqurade use is frowned upon in IPv6?
What sort of techniques are used to create automatic fallover connections to the internet for the server which are ultimately invisible to the devices connected to the server?
I’m currently running a headless ubuntu server, usually configured via SSH from the local networks or through VPN.
Thanks all.