How to connect two PCs with IPv6 addresses

Question

I connected two PCs by IPv6 address with same subnet and prefix. These PCs can't ping each other.

Can somebody tell me why these computers can't ping each other?

These are the IP addresses that I assigned:

2001:db9:1:1::1/64
2001:db9:1:1::2/64

I left your virtual-machine tag because I honestly don't know if you're trying to use virtual machines for that or not. You need to be more specific: Which machines do you connect, how do you connect them (e.g. over a "real" network using a switch, or directly, or as a virtual machine)? — slhck, May 26, 2011 at 10:04

Gareth · Accepted Answer · 2012-08-01 00:27:03Z

1

If they're on the same VLAN/subnet (read: no routers or NAT boxes in-between):

Try pinging them with their link-local IPs (fe80:: stuff you get automatically)
Try turning off iptables6 just to make sure you dont have something blocking
Run tcpdump/Wireshark/tshark on both ends so you know whether the packet leaves the box and arrives on the other

When pinging in IPv6, remember to specify which interface you want the ping go out on.

Gareth

18.8k15 gold badges58 silver badges69 bronze badges

answered May 26, 2011 at 12:00

Marcin

8385 silver badges5 bronze badges

Add a comment |

Gareth · Accepted Answer · 2012-08-01 00:26:14Z

0

Try using:

ping -6 <IP address>

Perhaps you are trying to ping a IPv6 address with an IPv4 ICMP packet.

Gareth

18.8k15 gold badges58 silver badges69 bronze badges

answered May 26, 2011 at 11:48

Diogo

30.5k69 gold badges152 silver badges223 bronze badges

Add a comment |

2 Answers 2