I've verified fix-released on utopic. In 2 ways:
a.) set /etc/network/interfaces with:
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet6 static
netmask 64
address 2001:db8::1:3
And set a local 'NoCloud' datasource, and then booted
the system to see 'ip -6 addr' shows t
** Also affects: ifupdown (Ubuntu Utopic)
Importance: Medium
Status: Confirmed
** Also affects: ifupdown (Ubuntu Trusty)
Importance: Undecided
Status: New
** Changed in: ifupdown (Ubuntu Trusty)
Status: New => Confirmed
** Changed in: ifupdown (Ubuntu Trusty)
Import
See also bug #994931 (Altering use_tempaddr drops all IPv6 addresses).
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Title:
Impossible to configure network interface with only IPv6 address
just for the record changing
sysctl -e net.ipv6.conf.all.use_tempaddr
is what causes the problem. changing 'sysctl -e
net.ipv6.conf.default.use_tempaddr' does not.
changing 0 -> 2 or 2 -> 0 deletes all existing addresses for an interface.
** Changed in: ifupdown (Ubuntu)
Importance: Undeci
i opened bug 1379427 for the incorrect static-networking bug that i
found when investigating.
setting the use_tempaddr setting ends up wiping existing ipv6 addresses.
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The simple fix, then is:
rm /etc/sysctl.d/10-ipv6-privacy.conf
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Title:
Impossible to configure network interface with only IPv6 address
To man
I did a fair amount of debug information including recreation with a
cloud image at lp:~smoser/+junk/lp-1377005 . I'll copy the final comment
here.
ok. so, i now know what happens, and why adding anything before the ipv6
address "fixes" the problem.
boot happens like this:
* system boot
* net-d
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: ifupdown (Ubuntu)
Status: New => Confirmed
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Title:
I
drive-by: setting "package" to "ifupdown"
** Package changed: ubuntu => ifupdown (Ubuntu)
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Title:
Impossible to configure network interface with
** Tags added: trusty
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Title:
Impossible to configure network interface with only IPv6 address
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Thank you for taking the time to report this bug and helping to make
Ubuntu better. It seems that your bug report is not filed about a
specific source package though, rather it is just filed against Ubuntu
in general. It is important that bug reports be filed about source
packages so that people
The workaround for now is to configure an IPv4 address:
auto eth0
iface eth0 inet static
address 169.254.199.199
netmask 255.255.0.0
iface eth0 inet6 static
address 2001:610:188:444::55
netmask 64
gateway 2001:610:188:444::1
autoconf 0
prive
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