How do extra IPv4 addresses add to the one included?

Separate the included address from the extras

Every EPYC 7543P order includes 1 IPv4. That address is inside the model monthly rate and is not charged $2 again. The configure page asks for the extra count, from 0 to 255. Extra count times $2 is the monthly price of the address line. The total equals 1 plus the extra count, and the ceiling is 256.

Reading "1 extra" as "1 address in all" undercounts. One extra means one more beyond the default, so the machine has 2 addresses and the monthly rate rises by $2. Zero extras is the included address alone, and the address line is $0.

Addresses are sold one by one. They are not packed as a /29, a /28, or another subnet. Eight extra addresses means entering 8, not looking for a subnet plan. After 8, the total is 9. If a plan's "8 addresses" already includes the default, the form should say 7.

Add the monthly price, then multiply by the months

The address monthly price joins the monthly rate, then that rate is multiplied by the months in the cycle. Monthly multiplies by 1, quarterly by 3, semiannual by 6, annual by 12. There is no separate address discount.

Example: the 128GB monthly rate is $462, and 3 extra addresses are $6. With no extra disk, no bandwidth change, and no Windows, the monthly rate is $468. A quarter is $1,404. The 256GB model is $595. The same 3 extra addresses make the monthly rate $601. The arithmetic is the same. Only the model base differs.

Extra disks and bandwidth join the same monthly rate. Each 2TB NVMe is $71. 1G bandwidth adds $255. 2G adds $745. Those figures do not depend on the address count. Moving from 250M to 1G does not include extra addresses. Buying addresses does not turn 250M into 1G. 250M, 1G, and 2G are unmetered. The limit is port rate, not the number of addresses.

Where an address is used does not depend on the system

Linux is reached by SSH. Windows is reached by RDP. The access method does not change the address count. The included address is usually the host address in the console, used for the first login. After extra addresses arrive, they are added to a NIC or a bridge in the system, and sites, mail, or a reverse proxy listen on them separately.

When one machine hosts several sites, a common layout is one address per public site, with the certificate and reverse DNS aimed at that address. Several sites can also share one address and differ by hostname. Sharing saves the $2 monthly price. The cost is that certificates, blocks, and moves stay tied together. For sites that should stay separate, the extra count is the site count minus 1, because the included address can carry one of them.

If virtual machines on Proxmox need their own public addresses, the host keeps the management address and the guests use the rest. On a bridge, do not place the same address on the host and a guest at once. If the management address is lost, SSH or RDP in the console is still the way back to the host. A wrong service address does not rewrite that login.

1. Count the addresses that must be public at the same time, including the one used for management.
2. Subtract 1. That is the extra count to enter. If the result is negative, enter 0.
3. Confirm the extra count does not pass 255, and the total does not pass 256.
4. Multiply $2 by the extra count, add it to the monthly rate, then multiply by the months in the cycle.
5. After payment, check the address list in the console, then write the addresses into the system or the guests.

Keep addresses, bandwidth, and disks on separate lines

Four choices sit next to each other on the configure page: memory size, extra disks, bandwidth, and extra addresses. Memory size selects 128GB or 256GB, at $462 or $595 per month. Memory is DDR4-3200 ECC RDIMM, chosen at order time. The default disks are 2×1TB NVMe, direct-attach, with no hardware RAID. None of that is inside the $2 for an extra IPv4.

A common mix-up is to multiply the included address by $2 as well. That adds an extra $2, $6 on a quarter, and $24 on a year. Reconcile with the table in this note: only the extra count enters the $2 line. The included address is already inside $462 or $595.

If a site address is missing after go-live, raise the extra count on the next change. The monthly price applies from the billing cycle after that change. Months already prepaid stay on the original invoice and are not split into a shorter period. The console invoice is the record of the change. This note only explains how to count.

Traffic leaves from the Tokyo facility

The machine is deployed in Tokyo, Japan. Addresses leave from this machine's network interface. A workload that needs a stable source address should bind the site to one fixed IPv4 and skip unrecorded rotation across addresses. Reverse DNS has to match the address. Put the address and the hostname in the ticket.

Windows Server uses the same address count as Linux. Standard is $22 per month. Datacenter is $25 per month. That is an OS charge, not an address charge. After Windows is selected, RDP uses the address and port from the console. Extra addresses still have to be bound in the system. Installing Windows does not configure all of them.

The extra count on the configure page is a number, with a ceiling of 255. The machine is deployed in Tokyo, Japan. Once the count is set, the monthly rate and the amount due both move. Amount due is always the monthly rate times the months. Addresses contribute only "extra count × $2".

Before filling the form, write a short list: one line for the management address, one line for each public site, and one line for each virtual machine that needs its own address. Merge lines that can share an address, then count the rows. Rows minus 1 is the extra count. The included address is not counted twice, and a guest that only talks on a private network is not counted as a public address.

How to check after delivery

The address list in the console should equal 1 plus the extra count on the order. If one is missing, compare the address line on the invoice before inventing an address in the system. An address with no matching invoice line should not be written into production config ahead of the bill.

• The default address accepts SSH or RDP, so the management path is open.
• Ping each extra address, or reach it once from outside, so it is not only written on the order and missing from the NIC.
• Each public site's certificate name matches the address it listens on.
• Bandwidth is still the 250M, 1G, or 2G from the order. Adding addresses does not change the port rate.
• Keep a private table of address, purpose, and virtual machine name. The console shows addresses on the machine. It does not replace an application map.

The count rule fits in one line: total = 1 + extra count, address monthly price = extra count × $2, amount due = (model + disks + bandwidth + address price + system) × months. The included address is not billed twice, and there is no subnet pack in between.