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
2k views

Should I get a router with ipv6 support?

I'm in the process of getting a new gigabit router so I can transfer files faster to and from my Lacie Network Space. I found Asus RT-N56U Wireless N Dual Band Gigabit Router. Its performance is ...
3
votes
1answer
1k views

Change permission to /proc/net/ip_conntrack on Ubuntu server 9.10

I have a script that needs to extract certain information form the /proc/net/ip_conntrack file once in a while. I do not wish to run this script as the root user. Default permissions for the file ...
3
votes
1answer
86 views

Translating IPv6 packets to IPv4 packets to reach a game server

I am behind a DS-Lite system and therefore have no native IPv4 address. But out of curiosity, I want to find out, if it is possible to set up a game server behind that. More precise, a counter-strike ...
3
votes
1answer
79 views

IPv4 connectivity to IPv6-only host

I have a IPv6-only host (let's name it S) in my home network which is accessible from outside by its IPv6 address. Since my ISP doesn't provide any IPv4 connectivity, it cannot be accessible from IPv4 ...
3
votes
1answer
328 views

Can I prioritize IPv6 traffic over IPv4 traffic on Linux?

Is there a way I can give traffic over IPv6 a higher priority than traffic over IPv4? Purpose is 2-fold: Promote IPv6, and be able to connect even when my server is swamped by IPv4 users.
2
votes
4answers
376 views

How common is fancy IP math accepted by tools?

If we specify an IPv4 address we all usually do the pattern of 1.2.3.4 Now essentially this is only 'a' way of writing a 32 bit number in a more human readable form. The IP address 1.2.3.4 can also ...
2
votes
2answers
936 views

How does CIDR slow the exhaustion of IPv4?

In the Wikipedia article on CIDR, it says The Internet Engineering Task Force introduced CIDR in 1993 to replace the previous addressing architecture of classful network design in the ...
2
votes
1answer
294 views

Shortcut to change IPv4 properties

I am looking for simple ways to change IPv4 properties of one of my networks and actually I can't find anything promising, just something about netsh. But I think there should be way to create a .bat ...
2
votes
3answers
958 views

Why were the ipv4 private address ranges chosen to be what they are? [duplicate]

Possible Duplicate: Why are home networks prefixed with 192.168? What makes the numbers 192.168 or 10. or 172.16 so special that those addresses, as opposed to other ones, were chosen as ...
2
votes
2answers
933 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 ...
2
votes
1answer
742 views

What are the equivalent IPV6 versions of IPV4 special-use adresses?

I'm trying to make a private network with 5 computers bellow an external ADSL router with NAT, but internally I want to use IPV6. To do this I need to use private special-use IPV6 addresses, such as ...
2
votes
2answers
83 views

Wireless Internet is “Unidentified”?

My laptop wireless refuses to connect with my wireless adapter. It says signals all good and ip address is cool, but my ipv4 ad ipv6 connectivity is "no netwok access". What do i do with that?
2
votes
1answer
163 views

Properly setup a DNS Fallback

My country just ordered the Internet Access Providers to blacklist some domain names from their respective DNS (i.e. responding to t411.io by 127.0.0.1). To get over this restriction is fairly ...
2
votes
1answer
306 views

Limit on hops in IPv4 and IPv6

I was reading IPv4, and in it it specifies time to live, aka TTL or "max hops" in IPv6 since this is what it really represents. My concern is that this value is 8 bits, thus has a max value of 255, ...
2
votes
1answer
2k 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
3answers
3k views

SSH tunnel in Ubuntu

How do I create a ssh tunnel in Ubuntu that is persistent? I have tried a lot of ways but I haven't gotten it to work.
2
votes
1answer
439 views

Windows IP conflict after setting Static IP

I am having troubles setting my static IP address. I double check all of my default settings and tried to make my IP static. Here is what I entered I have tried various different IP addres ...
2
votes
1answer
532 views

Using router public IP to access another (located in WAN) router behind NAT

I have following setup: at home I have a router up and running with public ipv4 ip at my country house I have ipv4 cam and router which is behind NAT - no public ip (public ip is too expensive) both ...
2
votes
1answer
339 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 ...
2
votes
1answer
463 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?
2
votes
3answers
14k views

How can I make localhost resolve to 127.0.0.1 instead of ::1?

When I ping localhost the address resolves to the ipv6 loopback of ::1 My MySQL and Apache installations expects the ipv4 address of 127.0.0.1 How can I configure my WindowsXP to resolve localhost ...
2
votes
4answers
8k views

Ping myself, works with ipv6 not ipv4 in Windows 7

I've tried to solve the following problem with no luck and I need some proffesional help. The following is possible: Ping all computers (that I tried) in the domain without problem. Ping myself ...
2
votes
1answer
458 views

Can't added back my client for microsoft networks in Windows 10

I can't open network shared folders. Got to looking at my NIC properties, and I found that I was missing everything buy IPv4 and IPv6. So I started to try to add back to client, and protocol. I can't ...
2
votes
1answer
1k views

Why is my computer suddenly using NBNS instead of DNS?

I have a Windows 7 laptop which I regularly use to access wireless internet when traveling. Normally, everything connects and functions as expected, but as of 4 days ago, I have noticed that I am ...
2
votes
1answer
457 views

Prefer IPv6 over IPv4 in Windows Server 2003

I am running Windows server 2003 and my Firefox browser keeps using IPv4 instead of IPv6. Well at least http://ipv6-test.com/ says that my browser uses IPv4. How can I force it to prefer IPv6 over ...
1
vote
5answers
3k views

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

[Edit: I have now found a solution; see below for my answer] 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 ...
1
vote
2answers
226 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 ...
1
vote
2answers
400 views

Should I get a gigabit router with or without ipv6 support? [closed]

I'm in the process of getting a gigabit router so i can transfer files faster to and from my Lacie Network Space. I found a gigabit Router. Its performance is really good, however it doesnt support ...
1
vote
3answers
6k views

Does IPv4 and IPv6 talk to each other?

If a country switches entirely to IPv6, does this changes anything for the other countries? (question inspired by this news article)
1
vote
2answers
3k views

How do I set a static IP address in Windows?

If I do not have access to the router / DHCP server to create a static reservation (i.e. asking the router / DHCP server to set aside a specific IP address when a certain MAC address requests it), how ...
1
vote
2answers
609 views

How to find the network address of a given subnet?

How do I find the x th subnet of X.X.X.X /XX (300 th subnet of 172.16.0.0 /29)?
1
vote
3answers
1k views

IPv4 forward on windows?

Is there anything that can forward/redirect all incoming traffic to another ip. Basically I'm looking the windows equivalent of ip forwarding in linux. echo "1" > /proc/sys/net/ipv4/ip_foward
1
vote
1answer
141 views

In tspc ipv6 tunnelling, does tunnel broker required for ipv4 to ipv4 communication?

I am new in embedded systems and trying to add support the ipv6 network availability in my new product but I have understood that, First of all, My system is connected to IPv4 ISP and I want to ...
1
vote
1answer
4k views

IPV4 Lan 2 IPs remove 169.254.* from nic

When I ipconfig: Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : IPv4 Address. . . . . . . . . . . : 172.30.2.194 Subnet Mask . . . . . . . . . . . : 255.255.255.0 IPv4 ...
1
vote
1answer
3k views

How do I access IPV6 from IPV4?

I have been searching for a long time ipv4 to ipv6 proxy program but i nothing found... Currently i have IPv4 address however i would like to try IPv6 address. Is there a simple solution for IPV6 ...
1
vote
3answers
1k views

Should I use a static IP address? If so what kind?

Last night I managed to get my local PC running as a server using port 80 and my IP address. After restarting my machine it stopped working. I was told I need to make a static IP address. My ...
1
vote
2answers
79 views

How to connect two locally linked computers to WIFI using IPv4 addressing?

I want to connect my laptop and another computer (which is RaspberryPi 2, but that's not very important) using a crossover cable. Then I would like to SSH from my laptop to another computer. Finally, ...
1
vote
2answers
79 views

I'm trying to open query.yahooapis.com but curl is trying to use IPV6 even if I only have IPV4 enabled

When I try to call query.yahooapis.com with curl it's trying to use the ipv6 address but IPV6 is disabled on my computer $ curl -v 'http://query.yahooapis.com/' * Hostname was NOT found in DNS cache ...
1
vote
1answer
151 views

How can my personal ISP connection return two public IP addresses?

I want to play a game (Wildstar) but each time I login, it gives me an “invalid login token” error. After looking into the issue, I found that it was caused by, according to Wildstar: WHAT DOES IT ...
1
vote
1answer
319 views

Access IPv6 computer from IPv4-only network. Is it possible?

I recently changed from an ADSL 10 MB to a GPON 40 MB and since then I'm having a bad headache. My old ISP (ADSL) gave me always a valid public IPv4. Sometimes it changed but there was no problem ...
1
vote
2answers
703 views

Definition of 'send_redirect' in Linux IPv4 context

I've encountered these two lines in a script: echo "1" > /proc/sys/net/ipv4/ip_forward/ echo "0" > /proc/sys/net/ipv4/conf/eth0/send_redirects The first line switches on ip forwarding, which ...
1
vote
1answer
2k 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 ...
1
vote
1answer
154 views

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

I have done some research on IPv4 and how to convert IP addresses to binary and vice versa. I also understand that IPv6 contains 4 x the amount of IPv4 binary per section. I just need to thoroughly ...
1
vote
2answers
729 views

How often is IPsec used in IPV4 networks?

If I disable it on my computer will I lose anything?
1
vote
2answers
61 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
50 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
314 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
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
287 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
173 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, ...