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Questions tagged [ipv4]

Refers to the 4th revision of the Internet Protocol, where addresses are usually displayed in the form of dotted decimals between 0-255. Ex: 169.254.0.1

The IP address of a device is its unique identifier on a network which allows communication with that device.

Given the fact that only 2^32 IPs are available, number which is already depleted, its successor (IPv6) has officially taken over on 6 June 2012.

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How do I visit ipv4 addresses (not domain) from an ipv6-only network?

I got an ipv6-only server and I want to visit ipv4 addresses like 8.8.8.8 with it. I know that I can visit ipv4-only website through DNS64 and NAT64. However, if the destination is just an ipv4 address like 8.8.8.8 it won't be converted to ipv6…
xyz257
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Using 'netsh interface ip set address' to override another adapter's address?

I'm one of the developers of the OpenConnect VPN client. We're trying to modernize and improve our support for Windows. We use a user-customizable JScript called vpnc-script-win.js to configure IPv4/6 addresses, routing, and DNS based on the…
Dan Lenski
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ping returns IPV6 address on ubuntu 20.04

I have installed GitLab on a cloud VM and shortly after stood up a second VM as a postfix server with the same provider (Hetzner) I first noticed a problem when I went back to the GitLab server to enable SMTP Email and nothing was being sent, not…
PrestonDocks
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What may cause a request being sent with a TTL of 64 to fail on connection to a destination ip that traceroute shows is 33 hops away?

From within a docker container (running ubuntu 18) running on AWS ECS I'm attempting to establish a connection to an outside data center. We've troubleshot the issue to where we believe it's the extra hop added by the local docker network that is…
cmikeb1
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AWS bring your own IP

I am a newbie to AWS. I understand there is a feature to move our own IP addresses onto AWS. So, any existing IP based restrictions don't have to change. I have a need for a new service to be deployed onto AWS (corporate account). And this new…
Prasanna K Rao
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Router sharing same IP address between parent and subnetwork

Suppose this hypothetical scenario: I have a parent network 192.168.0.0/16 and a subnetwork 192.168.42.0/24. I have a router with two network interfaces in between, whose address in the subnetwork is 192.168.42.1. Can I assign this same address to…
lvella
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name based ipv4 to ipv6 gateway

Supposing I have a dedicated server at host.com with an IPv4 address 1.2.3.4, a statically assigned IPv6 address, and an ample supply of additional IPv6 addresses. This host is serving multiple KVMs at guest.com, guest0.com, guest1.com and so forth,…
Joshp.23
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How to route a file to specific gateway?

I have Windows 8.1 Enterprise I am connected to two internet connections on my PC with this gateways: 192.168.1.1 = my isp gateway 192.168.43.1 = my mobile usb tethering gateway Now I want to route my "VPN.exe" file to 192.168.43.1 gateway…
alex leiyss
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NFS/SMB - cluster phenomen (blade center / synology / multi nic)

I hope someone can help me as we have in the company a strange issue and not even our network experts have an idea. The setup: We have a hyper-v cluster hosted on 16 blades in a HPE blade Center/enclosure. Each blade runs win server 2016 datacenter…
Fio
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In IPv4 Subnets - a /23 - How do we know which range to use?

Let's assume I don't know what my IP range is, or my default gateway, but I know my IP address is 192.168.5.38 and my CIDR Range is /23. How do I know what my IP range is? Is my range 192.168.4.0-192.168.5.255 or 192.168.5.0-192.168.6.255 Can we…
Chris S
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Ubuntu 16.04 LTS - DHCP deliver IPv6 but not IPV4

I got a Ubuntu Server 16.04 LTs, it's a VM on a ESX (VMware). This server was in dhcp config and it worked fine until today. (I know a server should be in static address but in my case, i don't really need to be static). Today, I restarted the…
Alexandre Serrano
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FreeSWITCH Dual Stack IPv4/IPv6

I'm currently trying to understand how I can enable my freeSWITCH to talk both IPv6 as well as IPv4. Currently, I thought it was going to be easiest to first create a set-up which works on IPv4 and then switch the IPv4 address for an IPv6…
Xabre
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What issues would arise if I decide to move my local network to IPv6?

I am managing a small corporate network, and actively investigate the possibility of getting rid of IPv4 entirely, at least on the LAN level. I intend to disable IPv4 DHCP and connect to each machine using their IPv6 addresses. All of my devices…
Livy
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How are web hosting companies able to give everyone public IPv4 addresses

I've a few web applications on AWS/Linode/Digital Ocean/Hostgator's VPS instances and each has an IPv4 address. As I understand it, APNIC and ARIN distribute IP addresses and new hosting companies have to buy unused IPs from ISPs going out of…
Nitin Nain
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Squid IPv6 To IPV4 mapping

i just finished setting up my squid proxy server, i have lots of IPv6 and only two IPv4 on my interface. the way squid is working currently is to use specified IPv6 tcp_outgoing_address, but if destination host is IPv4, it will automatically use one…
Pezhvak
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