How to know ISP is using IPV4 or 6? Can they use both at the same time?
Mine is a MAC binded connection. I have set Router for WiFi connection for other laptop. I have ISP DNS servers in the Router. Previously when I use to check DNS servers with ipconfig /all, the DNS use to be in numbers. Now they are in some weird numbers like fee0. Should I change DNS servers in my Router with this new weird numbers? Though my net works with old numbers?
They can, however, whether they do or not, will depend on how they’ve chosen to provide support for the protocol.
Mine is a MAC binded connection.
The MAC address won’t change with IPv6
I have set Router for WiFi connection for other laptop. I have ISP DNS servers in the Router. Previously when I use to check DNS servers with ipconfig /all, the DNS use to be in numbers. Now they are in some weird numbers like fee0. Should I change DNS servers in my Router with this new weird numbers? Though my net works with old numbers?
It would be better if you posted some detail, however, if the addresses begin with ‘fe80::’ you’re seeing link local addresses, these don’t come from your ISP, they’re just used on the LAN.
Categorized under internet,Protocols & Formats | Difference Between IPv4 and IPv6
mac_ipIPv4 vs. IPv6
The Internet Protocol version 4, or IPv4, is the defined standard in the world today, but it is being replaced by the more advanced IPv6, to help solve the IP address exhaustion problem that is looming on the horizon. IPv4 uses 32 bits to define each address, which, in total, is roughly four billion addresses. This was a huge number during its inception, but with the internet boom, this address pool is expected to run-out in 2010 or 2011. IPv6 uses 128 bits for each address. To put this in perspective, if you take the number of known stars in the universe, and square that number, the result will only be slightly larger than the number of addresses in IPv6.
The problem of IP exhaustion forced people to come up with complex ways to conserve addresses. The complex algorithms can be taxing for routers that need to decipher each packet, and determine its destination. IPv4 is also impaired when working with mobile networks, where the device can move from one network to another. IPv6 solves these problems, as the huge number of addresses makes the complex algorithms unnecessary.
The difference between the two, that most people would likely notice, is the appearance of the IP address. IPv4 uses four 1 byte decimal numbers, separated by a dot (i.e. 256.256.256.256), while IPv6 uses hexadecimal numbers that are separated by colons. Due to the incompatibility of IPv4 and IPv6, translations have been made to enable their interoperation, that leads to addresses that look like ::ffff:256.256.256.256.
It’s funny because 256.256.256.256 is an impossible address with IPv4 since one octect (8 bits) can only contain up to the number 255, for 256 it would be 100000000 which is 9 bits but still 255.255.255.255 is not available either since reservation for class D and E addresses.
Also routers still have to determine the destination otherwise it doesn’t know where to send the packet and the packet is dropped.
Also even if we don’t need to nat with overload when it comes to IPv6 I still think it’s a good idea to do so, no need to waste addresses for no reason other than being too lazy to implement nat etc, besides NAT provides a good security feature which is that it is harder to get inside your network, unless you use something like static NAT.
The example of merged IPv6 and IPv4 is new to me, I think it might be what the ISP does but in a company, if we didn’t already have public IPv6 but only IPv4 I would configure IPv6 inside the network and then use NAT PT to translate them into public IPv4 addresses.
There is so much more that differentiates them than what is quoted, the quote just pretty much explains how they look like (with some errors)
Win 7 64
I have PPPOE connection
Under Network Connections - I have 3 adapters, 1. Broadband Connection (ISP Dialer), 2 Realtek (Local Area Connection) & 3. Broadcom (WiFi)
ipconfig /all shows
Under Broadband Connection - DNS servers are numbers like xxx.xxx.xx.xx
Under Wireless LAN - No DNS servers shown, coz WiFi is not connected now, right?
Under Local Area Connection - DNS servers are shown as fec0:0…
Network & Sharing Center
Broadband Connection - Access Type is Internet
Local Area Connection - Access Type is No Internet
Currently I am directly connected to net, no router.