ipv6 question

[oiyankok at yahoo.ca (ann kok)]

Hi

Thank you. I try your way.  the ipv6 address is on eth0 interface.

I try to run ping6 the fe80::20c:29ff:fe3c:92a1%eth0

lt is same problem!

Any idea?

Thank you


2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:0c:29:3c:92:a1 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.12/24 brd 192.168.1.255 scope global eth0
    inet6 fe80::20c:29ff:fe3c:92a1/64 scope link tentative 
       valid_lft forever preferred_lft forever


# ping6  fe80::20c:29ff:fe3c:92a1
connect: Invalid argument
# ping6  fe80::20c:29ff:fe3c:92a1%eth0
connect: Invalid argument


--- On Fri, 3/11/11, Valdis.Kletnieks at vt.edu <Valdis.Kletnieks at vt.edu> wrote:

> From: Valdis.Kletnieks at vt.edu <Valdis.Kletnieks at vt.edu>
> Subject: Re: ipv6 question
> To: "ann kok" <oiyankok at yahoo.ca>
> Cc: nanog at nanog.org
> Received: Friday, March 11, 2011, 2:21 PM
> On Fri, 11 Mar 2011 11:15:36 PST, ann
> kok said:
> 
> > inet6 addr: fe80::20c:29ff:fe3c:92a1/64 Scope:Link
> 
> This is a link level address, only valid on one
> interface.? So you need to look
> at which interface it is attached to in the ifconfig
> output.
> 
> > ping6 fe80::20c:29ff:fe3c:92a1
> > connect: Invalid argument
> 
> ping6 wants the interface name for link-scope addresses,
> because on some
> hardware setups, the same MAC is used for all interfaces,
> which means that
> each interface has the same link-scope address.? So to
> disambiguate it,
> you have to feed it the interface name so it knows which
> link to use.
> 
> On my laptop, I currently have:
> 
> wlan0? ???Link encap:Ethernet?
> HWaddr 00:24:D6:53:C5:BA
> ??? inet6 addr: fe80::224:d6ff:fe53:c5ba/64
> Scope:Link
> 
> % ping? fe80::224:d6ff:fe53:c5ba%wlan0
>  ping6? fe80::224:d6ff:fe53:c5ba%wlan0
> PING
> fe80::224:d6ff:fe53:c5ba%wlan0(fe80::224:d6ff:fe53:c5ba) 56
> data bytes
> 64 bytes from fe80::224:d6ff:fe53:c5ba: icmp_seq=1 ttl=64
> time=0.072 ms
> 64 bytes from fe80::224:d6ff:fe53:c5ba: icmp_seq=2 ttl=255
> time=0.081 ms
> 64 bytes from fe80::224:d6ff:fe53:c5ba: icmp_seq=3 ttl=255
> time=0.090 ms
> ^C
> --- fe80::224:d6ff:fe53:c5ba%wlan0 ping statistics ---
> 3 packets transmitted, 3 received, 0% packet loss, time
> 1999ms
> rtt min/avg/max/mdev = 0.072/0.081/0.090/0.007 ms
> 
>