Linux IPv6 problem- Unknown host

E

el33t

Adept
I got IPv6 working in windows and solaris9.I was able to ping between these platforms. I can even ping a linux machine from windows n solaris.I can even SSH -6 <IPv6> from solaris(SSH1) machine to linux(SSH2) but not vice-versa. niether i can ping from linux to windows n solaris.
I get this mesage:
ping6: Unknown host
Click to expand...

where am i going wrong in any configuration.
I know how to manually configure IPv6 in linux,windows and solaris. It's local link address fe80::64

Regards.
 
I am not pinging using hostname. I am using:

ping6 <ipv6 address>

I get output Unknown host.

anyways i will see adding those hostname and ip to hosts. In solaris the file is diferent where u add IPv6-hostname. it is loacted here /etc/inet.

thanks
 
err yes its enabled in the kernel.i am using Fedora Core 3.

secondly the output of :
ifconfig eth0 |grep inet6

shows me the Ipv6 address: fe80::....../64

Regards.
 
It is strange. I tried ping6 with an arbitrary IP on a comp with IPv6 (lsmod showed ipv6 module) and it gives the same old mesage as your comp. Shouldn;t it have given network/host unavailable or something?

I can't get it... IPv6 is clearly running fine, but its utilities are not...
make sure the module IPv6 is running... after that.. well.. maybe u can send an email to ~unix~
 
well i still cant find the solution to this problem. maybe more reading is required for IPv6 on linux. really bored now will try again later.if u find the solution then good share with me.

regards.
 
ok i forgot about this thread just today i was on ipv6 and remembered about this discussion. So to solve the problem I added these lines in /etc/hosts:
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
Click to expand...

and then I ping my windows machine Ipv6 address with command:
ping6 -I eth0 fe80::2xx:xxff:fexx:47xx
Click to expand...

and it works!

Now if i want to ping my linux machine ipv6 address from Windows machine then I have to first use ipconfig command on Windows machine and the output for example is this:
fe80::2xx:xxff:fexx:47xx%4

Now see that "%4" that is the interface id in windows which is similar to eth0 eth1 etc

So if my linux IPv6 is: fe80::2xx:xxff:fexx:d6xx then command to ping is:

ping fe80::2xx:xxff:fexx:d6xx%4
Click to expand...

Regards.
 
I thought u already did that, at least that is what the link I gave said to do isn't it?
glad u got it up and running. that %4 thingy is weird. Would u still require it if ipv4 was disabled and there were no other NICs in ur win box?
 
KingKrool said:
I thought u already did that, at least that is what the link I gave said to do isn't it?
glad u got it up and running. that %4 thingy is weird. Would u still require it if ipv4 was disabled and there were no other NICs in ur win box?
Click to expand...

yes in my machine at office there is only one NIC and believe i was so pissed off with the ping command not working when i finally discovered the significance of the %4 :O lol It tells the ping command to use the NIC with id 4. You can use this commands to check the NIC id in windows:
netsh <enter>
netsh>interface <enter>
netsh interface>ipv6 <enter>
netsh inerface ipv6>show interface
Click to expand...

And also note that u have to use -I eth0 too with linux's ping6 command otherwise u get error unknown host. Just for testing I also commented the lines I added in /etc/hosts files and still the ping6 command works. So -I ethx is important. You can alias ping6='ping6 -I ethx' if u want
Regards.
 
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