vultr vps:Add a Secondary IPv4 Address to Your vultr VPS-iaspnetcore.com

This tutorial explains how to setup an additional IPv4 address on your Vultr VPS.

Introduction

A basic network configuration at Vultr consists of a single IPv4 address, configured by DHCP. If you have advanced networking requirements, Vultr supports multiple public IPs and up to five private networks. You need to manually configure these advanced scenarios

Ubuntu 17.10, Ubuntu 18.xx, Ubuntu 19.xx, Ubuntu 20.xx

Add Another IPv4 Address

step 1：Server Information->Setting – >Add Another IPv4 Address

Add IPv4 Address?
IPv4 Address: 1**.1**.1**.1**
Please note: Your server will require a server restart to add the IP address and you will need to manually configure it in your OS.

Additional IPs are billed at $0.003/hour.
 Yes, add and restart this server.

Additional IPv4 IP
IPv4 Addresses cost $2/month or $0.003/hour.
You will need to manually configure additional IPs on your VPS.
You are limited to a maximum of 2 additional IPv4 IPs per VPS.

Configure a IPv4 Address at Vultr

step 1:Determine the name of your ethernet device. In this example, we'll use ens3

ip link show

output

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
    link/ether 56:00:09:d8:91:bb brd ff:ff:ff:ff:ff:ff

step 2:Populate the /etc/netplan/10-ens3.yaml file with the following text.

You only really need to change these files if you are trying to enable additional IPs.

network:
  version: 2
  renderer: networkd
  ethernets:
    ens3:
      dhcp4: no
      addresses: [1x5.1xx.1xx.1xx/1xx,1xx.1xx.1x9.xxx1/32]
      gateway4: 1xx.1xx.1xx.1
      nameservers:
        addresses: [1xx.x1.1x.1x0]
      routes:
      - to: 1xx.2xx.0.0/16
        via: 1xx.1xx.1xx.1
        metric: 100

step 3:Update networking or reboot.

netplan try

Restart your server

step 4:restart your server

You must restart your server via the control panel after adding extra IPs.

View IpAddress

# ifconfig
ens3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 1xx.1xx.1xx.1xx  netmask 255.255.254.0  broadcast 155.138.159.255
        inet6 fxx::5xx:xx:fxx:4xx  prefixlen 64  scopeid 0x20<link>
        ether xx:xx:xx:xx:xx:xx  txqueuelen 1000  (Ethernet)
        RX packets 960520  bytes 246784205 (246.7 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1063715  bytes 248721785 (248.7 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 12181  bytes 20018460 (20.0 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 12181  bytes 20018460 (20.0 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0