If you are using auto-configuration with IPv6, the last part of your IPv6 address will be usually your MAC address. So its possible to create mobility profiles on the simple way. To prevent this you can activate privacy extensions, documented in RFC3041. After you’ve done it, the last part of your IPv6 address will be random generated
Configuration
Place following lines to /etc/sysctl.conf
#IPv6 privacy extensions
net.ipv6.conf.all.use_tempaddr=2
net.ipv6.conf.default.use_tempaddr=2
net.ipv6.conf.wlan0.use_tempaddr=2
net.ipv6.conf.eth0.use_tempaddr=2
Reload sysctl with
$ sysctl -p /etc/sysctl.confPossible issues
As described in the RFC in the part 3.4, your temporary IP are changing by itself during the runtime. So your active TCP connections will be broken. To avoid this, try to use the permanent IP address for such scenarios.
# example for ssh client
$ ifconfig eth0
eth0 Link encap:Ethernet HWaddr 01:01:01:04:04:05
...
#it's a permanent IP
inet6 addr: 2001:0001:0001:0:0101:01ff:fe04:0405/64 Scope:Global
inet6 addr: fe80::0101:01ff:fe04:0405/64 Scope:Link
#it's a temp IP
inet6 addr: 2001:0001:0001:0:80b9:1081:2661:80f3/64 Scope:Global
...
$ ssh -b 2001:0001:0001:0:0101:01ff:fe04:0405 mysshserver