View source for IPv6

= Resources =

'''Internet Protocol version 6 (IPv6)''' resources:

; [http://en.wikipedia.org/wiki/IPv6 IPv6 - Wikipedia] : Information about '''IPv6''' maintained at the [http://enwikipedia.org/ Wikipedia] web site.

= Usage Notes =

== Determine IPv6 Address ==

Use the '''ifconfig''' command to show the '''IPv6''' address associated with a particular interface (look for the line labeled: "'''inet6 addr:'''").

<div class="screen">
  <div class="screenTitle">Using '''ifconfig''' to Find the ''inet6 addr''</div>
  <div class="userInput"><span class="prompt">[root@taco ~]# </span>ifconfig eth0</div>
  <pre class="computerOutput">
eth0      Link encap:Ethernet  HWaddr 00:0C:29:C9:D5:1A  
          inet addr:192.168.0.138  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:fec9:d51a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1293164 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1878939 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:151619640 (144.5 MiB)  TX bytes:642030150 (612.2 MiB)
          Interrupt:17 Base address:0x1400 

</pre><div class="userInput"><span class="prompt">[root@taco ~]# </span></div>
</div>

In the above example, the '''IPv6''' address is: "''fe80::20c:29ff:fec9:d51a''". The double colons (::) in the address represent 3 groupings of zeros. Hence, "''fe80::20c:29ff:fec9:d51a''" is the short hand equivalent of: "''fe80:0:0:0:20c:29ff:fec9:d51a''".

== Ping a IPv6 Address ==

The following demonstrates how one can ''ping'' a '''IPv6''' address:

<div class="screen">
  <div class="screenTitle">Using '''ping6''' to ''ping'' a '''IPv6''' Address</div>
  <div class="userInput"><span class="prompt">[root@taco ~]# </span>ping6 -I eth0 -c 3 fe80::20c:29ff:fec9:d51a</div>
  <pre class="computerOutput">
PING fe80::20c:29ff:fec9:d51a(fe80::20c:29ff:fec9:d51a) from fe80::20c:29ff:fec9:d51a eth0: 56 data bytes
64 bytes from fe80::20c:29ff:fec9:d51a: icmp_seq=1 ttl=64 time=0.361 ms
64 bytes from fe80::20c:29ff:fec9:d51a: icmp_seq=2 ttl=64 time=0.935 ms
64 bytes from fe80::20c:29ff:fec9:d51a: icmp_seq=3 ttl=64 time=0.349 ms

--- fe80::20c:29ff:fec9:d51a ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 0.349/0.548/0.935/0.274 ms
</pre><div class="userInput"><span class="prompt">[root@taco ~]# </span></div>
</div>