Refers to the 4th revision of the Internet Protocol, where addresses are usually displayed in the form: 192.0.2.235

learn more… | top users | synonyms

3
votes
2answers
72 views

Why is tracert showing a private IP address right after my router, even though it has a public IP?

Here is a log of tracert superuser.com from my computer: Tracing route to superuser.com [198.252.206.16] over a maximum of 30 hops: 1 2 ms 2 ms 2 ms 192.168.1.1 2 11 ms 17 ...
1
vote
1answer
40 views

NAT in local IPv4 to extern IPv6

I have a cable router with an outgoing IPv6 address. In my lan I have IPv4 addresses. I want to access to my local server from internet. I am not familiar with IPv6, is there something like NAT? ...
1
vote
1answer
24 views

add multiple static ip addresses to a server with systemd-networkd

We have a server with multiple IP adresses. Lately we migrated to systemd and we still need mutliple IPs on that server. With systemd-networkd we have some trouble finding a configuration example. so ...
2
votes
1answer
66 views

static IP outside of subnet range

I have two questions, but let me explain the situation first. They are about the (static) IP address of a printer attached to the network. We had this networking setup, using a normal consumer router ...
-2
votes
1answer
56 views

Why are we still stuck on IPv4 when we are IPv6 ready? [closed]

With IPv4 finally just about out, why is it so hard to switch over to IPv6? My entire home network is IPv6 and the switch over was easy. Is it a hardware problem that keeps IPv6 from taking off? From ...
5
votes
1answer
511 views

Exactly how many valid IPv4 addresses are there?

Seemingly simple question, with enough edge and corner cases that I don't trust my ability to calculate it. What is the exact number of valid IPv4 addresses that could potentially be used as ...
0
votes
2answers
55 views

How to find largest possible IPv4 network within specified range

Let's say, we are given a range of 192.168.101.64 - 192.168.102.128. What is the easiest way to find the largest possible IPv4 network within specified range, including network address, subnet mask ...
0
votes
1answer
120 views

How to deal with Dual-Stack Lite and incoming connections

My ISP (german cable ISP Unitymedia) forced me to use DS-Lite / Dual Stack Lite because he ran out of IPv4 addresses. Common problems with that setup are: interrupted connections (i.e. in online ...
0
votes
1answer
32 views

Identify the TCP/IP classes respectively by beginning octets

I am busy studying for a network exam and I am stuck with this zinger: By studying the following beginning octets, identify the TCP/IP classes respectively 1-126 224-239 240-254 ...
0
votes
0answers
118 views

Default Gateway IPv6 but IP set on IPv4

I have a client who has a network setup. I have a couple of devices which work on the network using socket communication which I want integrated onto their network. There is a PC which is to be made ...
3
votes
2answers
62 views

Is it normal for a hosting service to require that I buy a public IPv4 for using my own $25 certificate?

Self explanatory title, I guess. I'd love to have my website in https only, but they (the web hosting service) claim in the administration that I need to buy a public IPv4 address from them before ...
2
votes
1answer
83 views

IPv6 only LAN with NAT64 router for Internet

I want to disable IPv4 on my LAN and run only IPv6. I will use a NAT64 Juniper firewall to provide Internet access since I only have IPv4 Internet. Will this break applications? Will I be able to ...
12
votes
6answers
68k views

Why do I get “General Failure” when pinging host name on a Win 7 node on the network?

This is a very peculiar problem with a station on our network. The client pc is running Windows 7 Pro. What makes this problem interesting is that this client is the only node on the network that ...
0
votes
0answers
25 views

Win8.1 machines have trouble browsing each other occasionally

I've got two Win8.1 machines. One is a desktop connected to the (dd-wrt) router through an ethernet cable, the other is a laptop that connects over wifi. Both can ping each other just fine through ...
81
votes
1answer
5k views

Strange dotless decimal notation of IP address… How does it work?

Earlier today I thought I had a URL in my clipboard, but I actually had four 9 digit integers copied from a spreadsheet, which were identification numbers from a proprietary system. Completely ...
2
votes
2answers
108 views

Is it possible to change my IPv4 address?

At home, when I type in ipconfig in the command line, I would find that my IPv4 address is 192.168.8.x. However, at office, when I type in ipconfig in the command line, the IPv4 address is ...
1
vote
0answers
23 views

Failed Wireless

Sorry i'm not good with computers so my tech. talk is limited. I have a presario CQ62 Notebook PC. 64 bit: Yesterday I went to the local Library to use some free internet. When I returned I could no ...
0
votes
0answers
36 views

Use rtpproxy as a NAT on openIMSCore

I have some problems, I want to ask about rtpproxy and OpenIMSCore server. Actually I want to make IMS running like this: client IPv4 -- > OpenIMS <-- ipv6client. I want to use RTPProxy as NAT, so ...
1
vote
2answers
52 views

Is there any chance to reassign an IP address assigned to a city to another city/region

Is there any chance to assign an IP address that previously assigned to another system in another city. Or it's fixed for a specific region/city. Suppose my current ISP assigned 106.52.214.255. When ...
1
vote
2answers
76 views

Can IPv6 traffic pass over an IPv4 network? [closed]

Consider the case where there are 2 computers using the IPV6 protocol that want to communicate with each other, and the packet(s) must pass through a network that uses the IPV4 protocol. Can the ...
7
votes
4answers
2k views

Does disabling IPv6 decrease my surface area of attack and increase performance?

I have colleague that is on this whole kick of disabling IPv6 while leaving IPv4 on each new machine that comes in before deploying in our environment. He takes his personal anecdotal evidence and ...
1
vote
1answer
66 views

What is the difference between IPv4 and IPv6 in terms of binary?

I know this question is for entry level users. That I am. New to this world and finding it very interesting. I have done some research on IPv4 and how to convert IP addresses to binary and vice versa. ...
1
vote
1answer
106 views

LAN and WLAN networks under same IP range

I'm a newbie in network stuff and haven't enough knowledge to do what I'm wanting for now, so I need your help, please. I've two networks, a wired and another wireless. The wired one is between two ...
1
vote
2answers
289 views

Doubt In default time to live (TTL) 255?

I know that,The Default Time to live value is 255, each time a ipv4 packet crosses a router that value is decremented by 1. But,When I ping my adsl router it shows TTL as 64 Pinging 192.168.0.1 ...
0
votes
1answer
437 views

Dynamic DNS for both IPv4 and IPv6 (using freedns.afraid.org or others)

I want to set up dynamic DNS on my Fritz!Box 7490, so that it is reachable both on IPv4 and IPv6. Note that I want to reach the Fritz!Box itself, and not a computer behind it. The scenario is that I ...
0
votes
0answers
23 views

Block IPv4 peers in deluged?

Is it possible to block all IPv4 peers and allow only IPv6 peers in deluged? Or can I modify torrent file to accept only IPv6 peers?
1
vote
1answer
213 views

How to get network ip address via windows command prompt?

How to get network ip address via windows command prompt? I know tat ipconfig /all shows ip configuration, but what about having just ipv4 adress?
1
vote
2answers
215 views

Unable to ping broadcast address

Host address: 192.168.0.13 Network: 192.168.0.0 255.255.255.0 Router: Cisco DPC3825 DOCSIS 3.0 Gateway (user manual) My home network uses the 192.168.0.0 /24 network for my (mostly wireless) ...
0
votes
1answer
41 views

Ways to differentiate between home and office private network

Let us consider there are two networks 1) home network and 2) office network. I have an application which will get the system IP and MAC Address of the installed machine while launching the ...
4
votes
1answer
200 views

Why does writing IP addresses this alternate way work, and is there a practical use case for it? [duplicate]

Recently I saw an incorrectly typed telnet command, and I saw that "regular" numbers were interpreted to IP addresses. I tried this myself in Windows and the same behavior is shown there, so obviously ...
3
votes
2answers
112 views

How does the separation between IP addresses on the internet and on the LAN work?

Complete newbie question: Say for example the address: 8.8.8.8 How does the computer know that this address is on the internet, not the local network? Could a device on the local network have the ...
1
vote
1answer
627 views

IP, Gateway and DNS changer [.bat Win7]

I have a batch file that I use on my WinXP SP3 (I found it on the net and it worked). SWiTCH TO CONNECTION 1 @ECHO OFF set varip=192.168.0.118 set varsm=255.255.255.0 set vargw=192.168.0.1 set ...
4
votes
1answer
56 views

VirtualBox not allowing me to modify IPv4 Network Mask?

I use Oracle VM VirtualBox to run a web server on my machine. I had it set up and working perfectly for a while. For the past few months it's been prompting me to update, and I finally gave in and ran ...
0
votes
1answer
44 views

Is there a command that allows me to set a prefered IP Address for an adapter? [duplicate]

I've got some customers who should use a specific IP in their network adapter, but manually setting it is a pain sometimes. So I would like to know if there's a shell command / batch that allows me to ...
0
votes
0answers
736 views

No DNS requests in Windows 7, nslookup works, ping and tracert can't resolve

I was trying to bring my old desktop computer back from the dead and faced a problem I couldn't deal with. The main issue is what I've written in the title - nslookup works, ping and tracert give a ...
0
votes
0answers
174 views

APIPA (169.254.*.*) being assigned even with DHCP off in Windows 7

I've one eth interface on my home Computer which has two IPv4 addresses assigned. I use static addressing not DHCP. I am not assigning the 169.254.. manually, it's being assigned by something in my ...
0
votes
2answers
29 views

Old Public IP has past owners DNS name

I have a new IPv4 address and every DNS Resolver site tells me that my DNS name is toponscapital.com. What can I do to at least change this?
-2
votes
1answer
347 views

Comcast Speed test slower performance on the IPv4 test than on the IPv6 Test

I have two computers. On one I get the same performance result for both IPv4 and IPv6. On the other I get slower (about 50%) on IPv4 than on IPv6. Why? Is there a config to change it?
4
votes
3answers
114 views

IPV4 address changes so it's hard to host a server. How do I change this?

I have a laptop and I am hosting a game server at the moment at home. Now, my problem is while port forwarding I have to add in my IPv4 address while port forwarding. My laptop is connected with WiFi ...
0
votes
1answer
214 views

How to route to public IP addresses from NAT where gateway is in subnet of target public ip addresses

I have the following scenario which is giving me fits. I have a block of IP addresses on a .248 subnet. The service is Comcast, and the modem uses IP addres ending in .246. On the router for my ...
28
votes
7answers
30k views

Is there any benefit to using IPv6 on my home network?

I know that IPv6 is the future because there is only 4 billion IPv4 address, but on a home network, you are not going to have 4 billion users. So are there any other benefits that would make IPv6 on a ...
0
votes
2answers
110 views

Two routers for two subnets

I have the following configuration: my laptop connected to router #1 (ASUS RT-N66U, let call him R1) using wireless connection. Laptop's IPv4 address is 192.168.1.143 (DHCP allocated) (LAN options on ...
0
votes
1answer
74 views

Enable IP(v4) forwarding on Linux Mint

How do I enable IP forwarding on Linux Mint? When typing the following commands in the terminal as superuser I got the following output: DALEK zermacr0yd # sysctl net.ipv4.ip_forward ...
0
votes
2answers
332 views

IPv6 connection through IPv4 network without internet-connection

I'm working at a project at my university and now the following problem shows up: We got a Server [Server] with a private IPv6 network. Some sensors (temperature, humidity...) are connected through a ...
0
votes
1answer
63 views

Addressing computers via ipv6 on local network [duplicate]

I'm very confused about how to address a computer on my local network via ipv6. I am writing a server which is meant to support both ipv4 and ipv6. Now I have don an ifconfig and gotten my ipv4 local ...
1
vote
1answer
86 views

How do I configure NAT to forward external requests?

I have three Raspberry Pi's connected to Linux machines and one computer connected to a router which is connected to the Internet. My goal is to configure each Raspberry Pi so that they can ...
1
vote
0answers
48 views

How do I configure NAT to forward external requests?

I have three Raspberry Pi's connected to Linux machines and one computer (also a Linux machine) connected to a router which is connected to the Internet. My goal is to configure each Raspberry Pi and ...
1
vote
1answer
85 views

Disable IPV4 on one interface using CMD

How can i make the same ad unchecking box IPV4 on internet connection properties, but using CMD, netsh, or sth. what i can put in .bat file?
0
votes
1answer
125 views

Setup IPv6 over IPv4 tunnel in VPN

Let me explain my szenario: I have a linux server A. A is reachable in a VPN. So if I am connected to the VPN over Internet I can successfully ping A. Server A is connected to a Router B. Router B ...
-1
votes
2answers
231 views

IPv4 address changes automatically

I run a website on my computer using XAMP. It runs on port 8888, when I configure the port I need complete this ip: 10.0.0._ to my IPV4 which is 10.0.0.4 right now. I don't know why but my IPV4 is ...