Gentoo Forums
Gentoo Forums
Gentoo Forums
Quick Search: in
whats is the different between ipv4 and ipv6?
View unanswered posts
View posts from last 24 hours

 
Reply to topic    Gentoo Forums Forum Index Networking & Security
View previous topic :: View next topic  
Author Message
hopshopdrop
n00b
n00b


Joined: 26 Apr 2013
Posts: 1

PostPosted: Fri Apr 26, 2013 11:32 am    Post subject: whats is the different between ipv4 and ipv6? Reply with quote

whats is the different between ipv4 and ipv6?
Back to top
View user's profile Send private message
miket
Apprentice
Apprentice


Joined: 28 Apr 2007
Posts: 228
Location: Gainesville, FL, USA

PostPosted: Fri Apr 26, 2013 3:56 pm    Post subject: Re: whats is the different between ipv4 and ipv6? Reply with quote

hopshopdrop wrote:
whats is the different between ipv4 and ipv6?


My, lots of things! It's a huge subject. I'll list a few big items, but you might take a look at some resources on the internet for more information. A nice starting point is the Wikipedia article on IPv6: http://en.wikipedia.org/wiki/Ipv6

A few advantages of IPv6 over IPv4:

  • Much larger address space: the 32-bit IPv4 space has no more big address blocks left, but the 128-bit IPv6 space has lots of room
  • Stateless autoconfiguration: IPv6 interfaces can get IP addresses without needing DHCP
  • No need for NAT: under IPv4, your ISP gives you only one IP address; with IPv6, you'd get 64 bits worth of addresses
  • No packet fragmentation: IPv6 endpoints are required to use MTU discovery. This avoids the performance-killing fragmentation that IPv4 routers have to do when packets are too large for at least one of the hops. This is my favorite IPv6 feature!


Of course, there are disadvantages:

  • Longer IP addresses: they are harder to write down or memorize, and they make editing DNS zone files more of a pain
  • IP-address syntax: the syntax for IPv6 addresses uses colons for separating 16-bit units. This makes it a bit harder to write and parse literal IP addresses in contexts where the colon normally specifies a port number (as in URL's)
  • No NAT: exposing all the endpoints on your LAN makes it more vital that you pay attention to the firewall rules at your router
  • Deployment is slow. Most ISP's still don't offer native IPv6, so if you want to try it, you likely have to use some kind of tunnelling technique. (I use Hurricane Electric and find that they do a good job.)


There's lots more to say. If you have more-specific questions, come back and ask them.
Back to top
View user's profile Send private message
khayyam
Advocate
Advocate


Joined: 07 Jun 2012
Posts: 2247

PostPosted: Fri Apr 26, 2013 5:42 pm    Post subject: Reply with quote

It might have been an idea to place an "EDIT" where the spam link was removed.

miket ... generic questions like this are quite often spam masking itself as topical. Anyhow, you are *wong* the answer is 2 :)

best ... khay

Spam link was in the profile, not in the post. — JRG

John ... in which case it should have been moved to Dustbin so that users don't end up responding to the question.
Back to top
View user's profile Send private message
Ant P.
Advocate
Advocate


Joined: 18 Apr 2009
Posts: 2510
Location: UK

PostPosted: Sat Apr 27, 2013 5:26 pm    Post subject: Reply with quote

Spam or not, the answer might at least be useful to real people later.
Back to top
View user's profile Send private message
Display posts from previous:   
Reply to topic    Gentoo Forums Forum Index Networking & Security All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum