6 ms·
That individual instance might host hundreds of LAMP vhosts, each could have its own IP now
by emteycz 5y ago
That individual instance might host hundreds of LAMP vhosts, each could have its own IP now
- eknkc 5y agoThat individual instance can host 300 trillion vhosts with individual IPs with a /80 block. It has more publicly adressable IP addresses than the entire ipv4 address space. That is exactly my question, is there a technical / practical reason for this? Or is it simply an arbitrary prefix?
- ghshephard 5y agoIPv6 networks, by specification, are (almost) always /64 - that is, your subnetwork can have 2^64 nodes on it - which means that any EUI-64 device (A device with a 64 Bit MAC address - Ethernet Devices with 48 bits commonly extend to 64 bits by stuffing 16 bits (FF:FE) in the middle) can automatically determine its own IPv6 address by just concatenating the Network + MAC address. No Stateful DHCP server required. I'm more curious as to why the /80. This is the very first time I've seen anything less than a /64. Without digging into the details, I'm guessing(?) that the network is a /64 (almost certainly), and on that network there can be /16 nodes (65536), each of which can have /48 (300 Trillion) vhosts. And I thought I had left CIDR behind with IPv4... Sigh.