ipv6 question

imNet Administrator admin+nanog at msk4.com
Wed Mar 9 09:01:35 CST 2011


On 3/9/2011 8:41 AM, ann kok wrote:
> Hi
> 
> I read ipv6forum.pdf about ipv6
> 
> It said 
> 
> MTU must be at least 1280 bytes (1500+)
> Does it mean to set the mtu over 1500

No, it simply means that the minimum MTU for IPv6 is 1280.

> 
> I set my linux box eth0 as 2001:db8:cafe:1111::12/64 but I can't ping it
> inet6 2001:db8:cafe:1111::12/64 scope global tentative 
> 
> ls it this problem? Thank you

Where are you pinging it from? also, the 2001:db8::/32 prefix is used
for "documentation purposes" and might be handled differently by the
TCP/IP stack.

> 
> 
> # 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
>     
> 
> 
> 
> 
> 


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