Questions tagged [ip-aliasing]

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How is GCP GKE VPC native cluster IP alias implemented?

How does the GCP/GKE VPC native network implement the alias IP assignment to each pod? As in Google Kubernetes Engine – Networking, each Pod will have an IP from secondary IP CIDR range of the subnet (...
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On CentOS-8 Tried Adding Alias IP Addresses, Broke DNS

I am working to establish a CentOS-8 machine in a hosted cloud environment as part of an effort to migrate the operations of my company off local machines. I need to add 2 alias IP address to the ...
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iptables: setting specific rules to IP aliases

We run several game servers all using one port with the use of IP Aliasing, the game servers bind to a specific aliased IP that belongs to the main dedicated server. I've setup netplan already and it ...
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2 answers
729 views

GCP: Can I have several IP subnets on the interface?

Can I have 2 subnets on the interface of VM in Google Cloud Platform ? For example: I have VPC vpc1 and it have 2 subnets: subnet1 - 10.1.1.0/24 and subnet2 - 192.168.1.0/24 Can I assign to ...
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GCP: Routing to ip alias over IKEv1 VPN without BGP

I have a private GKE cluster running in a single subnet and region. The nodes in the cluster utilize the subnet's CIDR of 10.60.0.0/16. The cluster has two secondary CIDR ranges for its pods and ...
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2 answers
910 views

Run OpenVPN server on alias IP

I want to configure OpenVPN server that works on alias IP. I changed the client config to have alias IP as remote and added "local 188.xx.xx.55" in OpenVPN config which is our alias IP. Also set "...
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1 answer
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Add an alias to a pfSense interface?

Note: maybe the "Background" and "Plan" are not really necessary; feel free to skip to the "Problem" immediately... Background We have recently migrated a bunch of servers from one subnet into ...
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Using aliased bond interface on host by an lxc container

As the title says, how do I edit the lxc container's configuration to use the aliased bond0 interface on the host? This is what I have in the /etc/network/interfaces file now: # The loopback network ...
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-2 votes
1 answer
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how to force OS using which alias ip address

i have a server running debian with 2 ip address : eth3 44.44.44.1 eth3:0 44.44.44.2 the problem is my outband request goes with second ip address "44.44.44.2" how can i force OS to use primary ...
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IP Range - Subnet network configuration on CentOS 6.4

I have problems to configure an subnet /25 on an vps with CentOs 6.4 have tried different version. The original eth0 settings are: DEVICE=eth0 #HWADDR=de:8f:24:e9:7b:04 TYPE=Ethernet UUID=64e110dd-...
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What should i use instead of eth0:1 if it is deprecated

usually i create /etc/sysconfig/network-scripts/ifcfg-eth0:1 and /etc/sysconfig/network-scripts/ifcfg-eth0:2 but i seen in internet that it is deprecated using eth0 :1 so what can i use to the VPS ...
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2 answers
887 views

Tunnelling through an IP alias

I have a server machine with a dedicated IP and several IP aliases. It has a single network interface and on it there are multiple IPs "attached". So let's say IP1 is the main ip but I also have IP2 ...
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What aliased IP client is connecting to?

On my server (FreeBSD 9.2-RELEASE) I have several aliased IP addresses from one subnet: 192.168.0.1/24 192.168.0.2 192.168.0.3 And I am wondering how to correctly detect to wich particular IP a ...
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How to throttle bandwidth for ipalias in Linux

I want to slow the connection between some nodes to a virtual node inside one machine. (different nodes use different ip with ip-alias or with different ports) In Linux, is it possible to slow the ...
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1 answer
781 views

vyatta virtual router interface aliasing does not work

I am trying to create an alias on vyatta virtual router. But I do not seem to get it to work. In vyatta we have to just add another address to the interface to add an alias. But the interface is not ...
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Linux IP Alias of different pool becomes primary

I have two different Public IP addresses of two different subnets : 1) 206.190.147.100 2) 198.105.208.3 I am using CentOS 6.5 and my configs are as follows : root> cat /etc/sysconfig/network-...
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2 votes
2 answers
3k views

Linux IP Alias not working - Amazon EC2

I can't seem to figure out this IP aliasing on Amazon EC2. I know it should be straight fwd though. In summary I have two questions (my scenario details follows after questions), in priority: How ...
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2 answers
840 views

IP Aliasing on different networks (windows)

My cousin works at a Municipality service and she asked me if I can help them upgrade their old Windows XP computers to new ones with Windows 7 and install them. It seemed like a pretty simple task so ...
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2 answers
684 views

Router see IP alias? [closed]

On my Win7 host machine, I have two VMs which I test network/server stuff. On one machine I created an IP alias using the following commands from http://www.yolinux.com/TUTORIALS/...
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3 answers
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Routing between different aliases of a NIC without lo

I have an alias for eth0 called eth0:0. Short version: I want to route packets from one virtual interface to another through an external gateway and not through the loopback interface. Detailed: I ...
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IP alias lost when changing main IP

my /etc/network/interfaces: auto eth0 iface eth0 inet static address 192.168.3.75 netmask 255.255.255.0 gateway 192.168.3.0 Situation 1: After linux booted I set an IP alias: ifconfig ...
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1 vote
2 answers
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IP Alias and port bridging

The situation is that I have an Ubuntu box with multiple ethernet ports, which I'd like to behave as if connected to the computer through a switch. I can achieve this easily with a bridge. In /etc/...
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6 votes
1 answer
4k views

FreeBSD IP aliases in different subnets and default outgoing IP address

I have a FreeBSD VPS that until recently had assigned 3 public ip addresses in a /29 subnet. When making outgoing connections, the IP address used was always the non aliased one ".20", however now I ...
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1 answer
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How this aliasing worked

I am trying to do ip aliasing on my ubuntu 12.04 guest and it was not working. host 11.x.11.2 guest 11.x.11.3 guest is using bridge networking with host. on guest specified auto eth0 iface eth0 ...
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13 votes
2 answers
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Persist IP address alias across reboots in CentOS/RHEL 6 using "ip" command

I've always used the ifcfg-eth0:1 alias files to create additional addresses. However, in recent rhel documentation, it states that: As the ip command of the iproute package now supports assigning ...
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10 votes
1 answer
735 views

iptables not allowing mysql connections to aliased ips?

I have a fairly simple iptables firewall on a server that provides MySQL services, but iptables seems to be giving me very inconsistent results. The default policy on the script is as follows: ...
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4 votes
1 answer
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Linux: ip alias versus iproute

When setting up a web server with multiple IP-based virtual hosts, I've always used the eth0:x alias notation in /etc/network/interfaces. The wiki on my hosting provider states however that this is ...
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1 answer
872 views

Open port iptables with ip alias

Added alias ip, creating eth0:0. network restarted, ngix is listened on alias ip: server { listen alias.ip:80; From server machine I can access www using # lynx http://alias.ip/ How to ...
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IIS 7 and Windows 2008: only one ip address showing for IIS binding when multiple aliases exist?

In Windows 2003 I have multiple IP aliases setup on a single network card all bound to IIS 6. In Windows 2008 I have multiple IP aliases setup but only one shows up in IIS 7. What do I need to do to ...
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1 vote
1 answer
547 views

Aliases for Each Subnet, and DNS, and AD

I am currently trying to fix a flawed build at my location and want to get some suggestions / ideas about how best to proceed. The systems (Windows 2003 and RHEL 4) came configured with an alias for ...
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0 votes
1 answer
242 views

Using twice NATTing and dns_Alg

I am trying to use twice nat along with dns_alg to support a framework, and take its measurements. I have a private network 192.168.0.0/24 this network contains www,dns,dhcp etc for its own use.DNS,...
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0 votes
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In Linux (Ubuntu 10.10 server), can I have a host alias for my IP address and its alias IP's?

I have a web server with realIP 192.168.1.1. Perhaps i'll give it IP aliases 10.1.1.1 and 20.1.1.1. I have 3 IP subnets in 1 physical network, 10.1.1.0/24, 20.1.1.0/24 and 192.168.1.0/24. Now what I ...
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1 vote
1 answer
200 views

linux ip aliasing

Do aliased ip addresses have to be on the same network? E.g. If I have eth0 with 10.10.10.1, can I setup an alias (eth0:1) with ip address 10.10.11.1?
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2 votes
5 answers
18k views

Creating ip alias on bonded interface ie. bond0:1

System: HP Proliant DL360 G5 running CentOS 5.4 Bonded interface is working fine for a long time. I just went to add an alias the way I always have on a regular interface, and on first check it works ...
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1 vote
3 answers
8k views

Centos: multiple IP addresses

I just bought 10 extra IPs from my host. How do I point these at my CentOS 5 server?
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1 vote
3 answers
1k views

ip alias lost when dhcp renews lease

I have a server that I have setup to use dhcp for the main connection information and have an alias set up that my router forwards ports to. Everytime (I think this is what is happening) dhcp renews ...
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1 vote
4 answers
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DNS or Hosts help. Can I alias this IP address & port to something more friendly?

I have a 2003 Server VM named Gemini, it has 2 IP addresses 10.0.0.25 & 10.0.0.99. I have a website on that box that listens on 10.0.0.99:81. Is there anyway I can alias 10.0.0.99:81 to dev.gemini....
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16 votes
6 answers
33k views

When IP aliasing how does the OS determine which IP address will be used as source for outbound TCP/IP connections?

I have a server running Ubuntu Server with four IP addresses aliased on a single NIC. eth0 192.168.1.100 eth0:0 192.168.1.101 eth0:1 192.168.1.102 eth0:2 192.168.1.103 (Using 192....
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