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.kletni...@vt.edu <valdis.kletni...@vt.edu> wrote: > From: valdis.kletni...@vt.edu <valdis.kletni...@vt.edu> > Subject: Re: ipv6 question > To: "ann kok" <oiyan...@yahoo.ca> > Cc: nanog@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 > >