LAN addresses in IPv6
Timothy Murphy
gayleard at eircom.net
Tue Mar 10 00:52:46 UTC 2009
Robert Moskowitz wrote:
> What is the interface name for the tunnel? Do an ifconfig on it. It
> should show 2001:770:100:134::2 as the global scope addr. And you should
> be able to ping6 -n the ::1 address, and if so, ping6 -n ipv6.google.com.
I thought I had no machine with a global scope address,
but either I was unobservant or re-booting my server changed things.
In any way, I see that eth0 on my server (the interface to my ADSL modem)
does indeed have a global IPv6 address:
--------------------------------------
eth0 Link encap:Ethernet HWaddr 00:1D:09:2B:75:2D
inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: 2001:770:100:134::1/64 Scope:Global
inet6 addr: fe80::21d:9ff:fe2b:752d/64 Scope:Link
--------------------------------------
I can ping6 this address, but cannot ping6 google:
--------------------------------------
[tim at helen ~]$ ping6 -n -c2 2001:770:100:134::1
PING 2001:770:100:134::1(2001:770:100:134::1) 56 data bytes
64 bytes from 2001:770:100:134::1: icmp_seq=0 ttl=64 time=0.056 ms
64 bytes from 2001:770:100:134::1: icmp_seq=1 ttl=64 time=0.065 ms
[tim at helen ~]$ ping6 -n ipv6.google.com
connect: Network is unreachable
[tim at helen ~]$ ping6 -n 2001:4860:a003::68
connect: Network is unreachable
--------------------------------------
I tried stopping shorewall temporarily ("sudo shorewall clear")
but this didn't affect the outcome.
I guess I have a lot of ipv6 reading to do ...
--
Timothy Murphy
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland
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