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

1
vote
2answers
76 views

Would NAT be eliminated transformed in ipv6?

NAT is a wonderful concept used in ipv4. It is the major reason for the existence on internet, in my concerns. There are no networks in the world that doesn't work without employing NAT. All I seek ...
1
vote
2answers
59 views

IPv4 changes by itself

My IPv4 address randomly changes by itself but I can't figure out why ? It changes from 192.168.0.10 to 192.168.0.13 and vice versa. That happens doesn't happen often but very randomly... Does ...
1
vote
1answer
410 views

Network Interface starts without IPV4

When I boot some RHEL 6.5 server, the NIC shows an IPV6 address but no IPV4 on ifconfig However, if I ifdown + ifup it, it gets its IPV4 address (via DHCP). For clarity, is is enabled on boot via ...
1
vote
1answer
378 views

ssh from IPv4 to IPv6

I have been trying to reach, using ssh, an IPv6 server from a IPv4 (only) client, but am having no success. Both systems run ubuntu 12.04. I am aware that ipv4 and ipv6 are different protocols and ...
1
vote
1answer
14 views

Port restrictions and MACs

I have a question regarding connections within a university setting. In my room I have two network points. One for my pc and one for my voip phone. Each network port is restricted to one mac address, ...
1
vote
2answers
331 views

How to extend ipv4 addresses to 64 bit? [closed]

I know that ipv4 addresses are 32 bits. But is it possible to extend the ipv4 addresses to 64 bit from 32 bit?
1
vote
2answers
216 views

Can two different services on the same machine use the same port on IPv4 and IPv6?

Say I have two TCP services A and B. A is an IPv4-only service listening on 127.0.0.1:10000. B is an IPv6-only service listening on ::1:10000. Can I start these services on the same machine? That is, ...
1
vote
2answers
140 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
1answer
346 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
1answer
1k views

OpenVPN 4in6 or 4over6 tunnel

My ISP sucks. It gives me an IPv6 Address and an IPv4 one, but IPv4 is down 50% of the time (I can't access any IPv4 Services every 10 minutes)... As I already have an OpenVPN Server set up, I asked ...
1
vote
1answer
148 views

IP Routes - Route Mapping

I've been reading up on static routes and such while studying for my next MS exam, and am wondering - in CMD, if you do a route print -4 you get a Active Route Output such like this: Destination 0.0....
1
vote
1answer
26 views

BInd9 not woking with ipv4 by default

I have an Debian running Bind9 with many logs like error (network unreachable) resolving so set -4 in /etc/default/bind9 but not forced to work with ipv4 look the /etc/default/bind9 # run ...
1
vote
0answers
103 views

How does AWS convert an IPv6 address to an IPv4 address when whitelisting “My IP” address

I recently had to whitelist my IP address in an AWS security group using the "My IP" option. It worked perfectly and displayed an IPv4 address, but when I looked up my IP address with Google I got an ...
1
vote
0answers
43 views

ipv4tov6 address translation in windows7

I have a windows7 PC connected to a IPv6 network. On the PC I have an application that needs to communicate with another IPv6 machine. The application can only be configured with an IPv4 address. Is ...
1
vote
0answers
102 views

Why doesn't my DNS change propagate within the TTL?

Why isn't my DNS propagating correctly? It has a TTL of 3600 seconds, 1 hour, yet it is still resolving to an old IP. It's been at least 10 hours! http://www.onlinedig.com/go-dig/ C:\>nslookup ...
1
vote
2answers
251 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
0answers
60 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 ...
1
vote
0answers
2k 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 ...
1
vote
1answer
134 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
106 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
1k 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 ...
1
vote
1answer
11k views

Windows 7 ipv4 autoconfiguration - cannot connect to internet

I get my internet connection from a guy (lets call him my service provider henceforth). He gives internet connections to many students here in my hostel. My PC gets a private IP through his DHCP ...
1
vote
0answers
37 views

IPv4 Considerations for a Cloud-based future [closed]

I'm re-doing a small company's IP scheme / netdesign for their LAN. They are growing fast, with many branch offices opening soon. It's a mostly flat 192.168.1.x/24-ish out-of-the-box network. There ...
1
vote
1answer
892 views

strange characters in DNS Suffix

I have some strange characters in my DNS Suffix. I have removed these strings from registry and attempted to fix this in many other ways. Does anyone here have an idea of what I could do to fix this. ...
1
vote
0answers
811 views

IPv4 not enabled in Windows 7

I have a Netbook with Win 7 Starter edition. I am not able to get IPv4 enabled/installed in the Netbook and hence not able to network/connect to Internet. It says "Limited access" when I check ...
1
vote
2answers
1k views

Can't ping Linux IPv6 address from Windows XP

I gave an IPv6 address to my SUSE Linux machine on a VirtualBox VM with ifconfig eth0 inet6 add ... I can't ping that address from Windows XP (vice versa) The address of the Linux machine is efbb::26 ...
1
vote
1answer
170 views

Unexpected IPv4 address when pinging machine on home network

Set-up I have three computers on a home network. No domain, just using Windows "workgroup" functionality. I'm using Input Director from a desktop Win7 PC to control two laptops (one Win7, one WinXP) ...
1
vote
0answers
469 views

When and why does Gateway Metric become equal to Interface Metric ? (Windows network Adapters)

netsh interface ip show address .... command reveals some information about the gateway and interface metrics of each type of adapter . However the gateway metric seems to alwyas change and sometimes ...
1
vote
1answer
249 views

Automatic ipv4 interface metrics algorithm?

Here is the link in reference http://support.microsoft.com/kb/299540 .Is there anything similar for windows 7 ?
1
vote
1answer
23 views

why does ipv6 coexist with ipv4 slow the load?

My laptop have two network adapter:one is wired lan, while the other is wireless lan. Now I connect ipv6 using wired lan and ipv4 using wireless. The web page seems to get something wrong. It load ...
0
votes
2answers
53 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
2answers
32 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?
0
votes
2answers
50 views

Why do I have an IPv4 and IPv6 address at the same time?

I was tampering with my LAN and noticed that some servers see my external network address as an IPv6 while others as an IPv4. Why?
0
votes
2answers
320 views

IPv4 and IPv6 from different browsers on same computer

On my laptop, in Chrome, when I Google "What is my IP?", I get an IPv6 returned as my public IP address. On the same laptop, in Firefox, I Google the same thing, and get an IPv4 returned as my public ...
0
votes
2answers
2k views

Local DNS server is required to use names instead of full IP?

My computers have local IP addresses such as 192.168.0.X. And many of the computers have names such as "MyPC" or "YourPC" etc. It seems on Windows, in most cases, just using "MyPC" instead of the ...
0
votes
1answer
5k views

How to configure Gateway as Proxy Server

In my office environment, my machine is configured with an IP address, Subnet Mask and a Default Gateway. The Default Gateway does not allow internet connectivity but is configured to provide us with ...
0
votes
3answers
798 views

Since IPv6 has larger addresses than IPv4, how will that affect performance?

IPv4 are 32 bit addresses, while IPv6 are 128 bit. It's 4 times larger, sure on a small scale maybe not a big difference, but on a world wide scale will it make a difference? Are their any messures ...
0
votes
1answer
56 views

I can access my website using my IPv4 address but not my IPv6 address. Why?

I exposed my personal web server to the outside world by opening port 80 for incoming on my firewalls and doing the proper port forwarding. Then I went to whatismyipaddress.com to get my outside IP ...
0
votes
1answer
156 views

IP Datagram Fragmentation total length and payload calculations

I do not understand how to fragment a IP datagram. Let's say the original datagram has a total size of 302 (20bytes header and 282 bytes payload). My datagram needs to be fragmented since it goes ...
0
votes
3answers
278 views

Leading zeros in IPv4 address; is that a no-no by convention or standard?

I teach a class on a software product my company makes and I find that students frequently add leading zeros to a configuration page to have the software connect to our hardware. Leading zeros are ...
0
votes
2answers
281 views

Network Redirect off subnet for Synergy in hosts file

Perhaps I'm off the right track here, but I'll describe what I'm trying to do first generalized and then why I want to do it. General Case I'm looking to redirect a specific IP address on a single ...
0
votes
3answers
856 views

IPv4 to IPv6 wireless LAN router

Does anyone know where I can find a home wireless router that does IPv4 to IPv6 address translation?
0
votes
1answer
41 views

My IPv4 Address automatically changes

I have Windows 8.1, For some reasons I need forward ports for my computer. (you may know that computer's IPv4 Address is necessary for it). But my computer's IPv4 address automatically changes after ...
0
votes
3answers
274 views

How do I find the IPv4 address of a computer on my Macintosh Wi-Fi network?

Is there any way to find the IPv4 address of a certain computer on my Macintosh Wi-Fi network? I know the computer name and such, so how can I use this to pinpoint which IP is theirs?
0
votes
1answer
190 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
2answers
671 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
1k views

Is it possible to configure a static IP alternative for all adapters using the registry?

I was reading the alternative configuration documentation, and thought I'd try to setup a fallback static IP to simplify my setup: HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/Tcpip/...
0
votes
3answers
7k views

How can I permanently save my chosen DNS settings for my wireless network adapter on Windows 7?

I use a custom DNS but I find myself needing to reconfigure it every time I connect, is there a way to save it permanently?
0
votes
4answers
2k views

Can we use IPv6 addresses only?

I am trying to do a project about IPv6. My first query is, can we completely disable our IPv4 address and use only our IPv6 address? My second query is, how can an IPv6-only host communicate with an ...
0
votes
1answer
2k views

What other protocols can run over the Link Layer besides IP protocol?

I am reading about ARP here and it says "Each protocol is assigned a number used in this field. IPv4 is 2048 (0x0800 in Hexa)." What are other alternatives to IPv4 and IPv6 as protocols to be run ...