Hi

Thank you for your help

I type the ifconfig -a

there is ipv6 address

inet6 fe80::20c:29ff:fe3c:92a1/64 scope link tentative

i also add one

inet6 2001:db8:cafe:1111::12/64 scope global tentative 

but both are not pingable by ping6


Here are commands you suggested me to run

route -n -A inet6
Kernel IPv6 routing table
Destination                                 Next Hop                                Flags Metric Ref    Use Iface
2001:db8:cafe:1111::/64                     ::                                      U     256    0        0 eth0    
fe80::/64                                   ::                                      U     256    0        0 eth0    
::1/128                                     ::                                      U     0      2        1 lo      
ff00::/8                                    ::                                      U     256    0        0 eth0    


ip -6 route
2001:db8:cafe:1111::/64 dev eth0  metric 256  expires 21334307sec mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 dev eth0  metric 256  expires 21330690sec mtu 1500 advmss 1440 hoplimit 4294967295


I can't ping ipv6.google.com but I should ping the eth0 ipv6 as it is host ip address. Right?

Thank you for your help.




--- On Tue, 3/8/11, Jakub Jedelsky <jakub.jedelsky@gmail.com> wrote:

  

From: Jakub Jedelsky <jakub.jedelsky@gmail.com>
Subject: Re: [CentOS] what wrong about my ipv6 address
To: "CentOS mailing list" <centos@centos.org>
Received: Tuesday, March 8, 2011, 3:36 AM
Dne 7.3.2011 20:56, ann kok
napsal(a):
    

Hi 

I used the command "ip -6 addr add
      

2001:DB8:CAFE:1111::12/64 dev eth0"
    

to add ipv6 address and can see it in ifconfig 

but can't ping it

Why?

Thank you

# ping6 2001:db8:cafe:1111::12
PING 2001:db8:cafe:1111::12(2001:db8:cafe:1111::12) 56
      

data bytes
    

>From ::1 icmp_seq=1 Destination unreachable:
      

Address unreachable
    

>From ::1 icmp_seq=2 Destination unreachable:
      

Address unreachable
    

>From ::1 icmp_seq=3 Destination unreachable:
      

Address unreachable
    

>From ::1 icmp_seq=5 Destination unreachable:
      

Address unreachable
    

>From ::1 icmp_seq=6 Destination unreachable:
      

Address unreachable
    

>From ::1 icmp_seq=7 Destination unreachable:
      

Address unreachable
    

>From ::1 icmp_seq=9 Destination unreachable:
      

Address unreachable
    

>From ::1 icmp_seq=10 Destination unreachable:
      

Address unreachable
    

>From ::1 icmp_seq=11 Destination unreachable:
      

Address unreachable
    

hi,

have you correctly set gateway? Send `ip -6 route` and
`route -n -A
inet6` to us. What about to ping ipv6.google.com from this
pc?
Where did you run ping command? Have you IPv6 enabled
there? "From ::1"
looks like something is misconfigured..

JJ
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