The same applies to Ubuntu 12.04 server.
Despite what interfaces(5) says:
privext int
Privacy extensions (RFC3041) (0=off, 1=assign, 2=prefer)
That statement does not seem to get honoured.
This entry in /etc/nework/interfaces worked fine at least in beta2, but now
does not work any more:
iface eth0 inet6 static
address 2001:610:148:dead::54
gateway 2001:610:148:dead::1
netmask 64
autoconf 0
privext 0
dns-search terena.org
dns-domain terena.org
dns-nameservers 2001:610:1:800a:192:87:106:105
2001:610:188:140:145:100:188:188
What's worse, booting a 12.04 machine with this very config will yield no IPv6
connectivity *at all*:
eth0 Link encap:Ethernet HWaddr 00:50:56:86:00:25
inet addr:192.87.30.54 Bcast:192.87.30.63 Mask:255.255.255.192
inet6 addr: fe80::250:56ff:fe86:25/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:97 errors:0 dropped:0 overruns:0 frame:0
TX packets:57 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:12528 (12.5 KB) TX bytes:9673 (9.6 KB)
If privext=0 doesn't get honoured and actually = 2 (as per
/etc/sysctl.d/10-ipv6-privacy.conf), then it looks like autoconf=0 and
privext=2 don't mix.
Commenting out /etc/sysctl.d/10-ipv6-privacy.conf, or setting autoconf=1
both fix the problem.
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https://bugs.launchpad.net/bugs/998223
Title:
Turns on IPv6 privacy extensions regardless of settings in
10-ipv6-privacy.conf
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