Re: [opensuse] IPv6 address used to be MAC now random - Leap 15.0

1 Feb 2020


      Andrei Borzenkov wrote:
...
01.02.2020 20:26, Per Jessen пишет:
...
Per Jessen wrote:
...
We use dhcpv6 too, I have never seen any such /128 addresses
assigned.
I saw some mention of the radvd 'AdvOnLink' option - it is on by
default, but when I switched it off and rebooted a machine, I _did_
see such a /128 prefix.  There is some relation, I'm just not sure
what it is.
I made this experiment -
modify radvd.conf, in the prefix definition, "AdvLinkOn = off".
rebooted a VM
It came up with a /128 address assigned:
2: eth0:  mtu 1500 qdisc pfifo_fast
state UP group default qlen 1000
    link/ether 7a:11:a2:11:4b:30 brd ff:ff:ff:ff:ff:ff
    inet 192.168.4.150/21 brd 192.168.7.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 2a03:7520:4c68:1:ff99::45e9/128 scope global dynamic
       valid_lft 82917sec preferred_lft 39717sec
modify radvd.conf, in the prefix definition, "AdvLinkOn = on".
After a little while, maybe some minutes -
2: eth0:  mtu 1500 qdisc pfifo_fast
state UP group default qlen 1000
    link/ether 7a:11:a2:11:4b:30 brd ff:ff:ff:ff:ff:ff
    inet 192.168.4.150/21 brd 192.168.7.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 2a03:7520:4c68:1:ff99::45e9/64 scope global noprefixroute
    dynamic
       valid_lft 84605sec preferred_lft 41405sec
And client is using to manage network what exactly?
wicked. 


-- 
Per Jessen, Zürich (14.9°C)
http://www.dns24.ch/ - free dynamic DNS, made in Switzerland.


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