[Bug 1573475] Re: Sync ndppd 0.2.5-2 (universe) from Debian unstable (main)
The bug breaks any reasonable use of ndppd if the initial description is
correct, it certainly breaks the setup I'm currently evaluating. I'm
using a VM to test a networking setup for an unrelated project, thus
it's more complicated than it'd be on real hardware.
My configuration uses ndppd to establish multiple IPv6 subnets in place
of the usual /64 ISP assignment for LXD containers, while the ISP
doesn't actually delegate the network to my host.
The VirtualBox VM environment is set up as follows:
- 1 ethernet adapter configured as a bridge with my physical nic, there's a
DHCP server on the same network
- 1 ethernet adapter on a host only network, ip
fc00:1234:::::/64
The VM itself is configured as:
- Ubuntu 16.04 server x64
- The bridged nic (enp0s3) is configured to use dhcp and practically only used
for apt
- The host only nic (enp0s8) is simulating the actual network of interest
- The nic veth1234 is connecting to the LXD container (p2p, set up by LXD)
- net.ipv6.conf.all.forwarding=1 in /etc/sysctl.conf
- LXD, bridging disabled
- ndppd installed
/etc/network/interfaces:
auto lo
iface lo inet loopback
auto enp0s3
iface enp0s3 inet dhcp
auto enp0s8
iface enp0s8 inet6 static
address fc00:1234::1/127
post-up /sbin/ip -6 route add fc00:1234::::: dev enp0s8
pre-down /sbin/ip -6 route del fc00:1234::::: dev enp0s8
allow-hotplug veth1234
iface veth1234 inet6 static
address fc00:1234::5:/112
/etc/ndppd.conf:
route-ttl 3
proxy enp0s8 {
router yes
timeout 500
ttl 3
rule fc00:1234::1/64 {
auto
}
}
The LXD container is configured as:
- name test
- Image source images:ubuntu/xenial/amd64
- default nic device removed
- new nic device: lxc config device add test veth0 nic nictype=p2p name=veth0
host_name=veth1234
/etc/network/interfaces:
auto lo
iface lo inet loopback
auto veth0
iface veth0 inet6 static
address fc00:1234::5:1/112
gateway fc00:1234::5:
dns-nameserver 2001:4860:4860:: 2001:4860:4860::8844
With Xenial's ndppd 0.2.4 it won't be possible to ping the LXD container from
the host, only from the VM or LXD container):
$ ping6 fc00:1234::5:1
PING fc00:1234::5:1(fc00:1234::5:1) 56 data bytes
>From fc00:1234::::: icmp_seq=1 Destination unreachable:
>Address unreachable
Installing the ndppd 0.2.5 package from the Yakkety repo on the VM fixes it:
$ ping6 fc00:1234::5:1
PING fc00:1234::5:1(fc00:1234::5:1) 56 data bytes
64 bytes from fc00:1234::5:1: icmp_seq=1 ttl=63 time=0.815 ms
By observing the traffic in Wireshark it can be seen that the VM host
only nic receives neighbor solicitation requests, but nothing responds -
ndppd doesn't pick them up.
The regression risk should be zero as the 16.04 package appears to be
unusable in its current form.
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https://bugs.launchpad.net/bugs/1573475
Title:
Sync ndppd 0.2.5-2 (universe) from Debian unstable (main)
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[Bug 1573475] Re: Sync ndppd 0.2.5-2 (universe) from Debian unstable (main)
I'm unsubscribing ubuntu-sponsors until there is an SRU patch here to sponsor. But please re-subscribe them when there is! Seems like a good fix. Thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1573475 Title: Sync ndppd 0.2.5-2 (universe) from Debian unstable (main) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ndppd/+bug/1573475/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1573475] Re: Sync ndppd 0.2.5-2 (universe) from Debian unstable (main)
** Changed in: ndppd (Ubuntu) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1573475 Title: Sync ndppd 0.2.5-2 (universe) from Debian unstable (main) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ndppd/+bug/1573475/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1573475] Re: Sync ndppd 0.2.5-2 (universe) from Debian unstable (main)
** Changed in: ndppd (Ubuntu Xenial) Importance: Undecided => Wishlist -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1573475 Title: Sync ndppd 0.2.5-2 (universe) from Debian unstable (main) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ndppd/+bug/1573475/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1573475] Re: Sync ndppd 0.2.5-2 (universe) from Debian unstable (main)
** Changed in: ndppd (Ubuntu Xenial) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1573475 Title: Sync ndppd 0.2.5-2 (universe) from Debian unstable (main) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ndppd/+bug/1573475/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1573475] Re: Sync ndppd 0.2.5-2 (universe) from Debian unstable (main)
I synced the package for the 16.10 release. Since the archive for 'yakkety' isn't open yet, it's sitting in the queue for the archive admins: https://launchpad.net/ubuntu/yakkety/+queue?queue_state=1&queue_text= To get this into xenial (16.04), we will need to follow https://wiki.ubuntu.com/StableReleaseUpdates - could you provide a test- case for the broken vs fixed package? ** Changed in: ndppd (Ubuntu) Status: New => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1573475 Title: Sync ndppd 0.2.5-2 (universe) from Debian unstable (main) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ndppd/+bug/1573475/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1573475] Re: Sync ndppd 0.2.5-2 (universe) from Debian unstable (main)
** Also affects: ndppd (Ubuntu Xenial) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1573475 Title: Sync ndppd 0.2.5-2 (universe) from Debian unstable (main) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ndppd/+bug/1573475/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1573475] Re: Sync ndppd 0.2.5-2 (universe) from Debian unstable (main)
** Changed in: ndppd (Ubuntu) Importance: Undecided => Wishlist -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1573475 Title: Sync ndppd 0.2.5-2 (universe) from Debian unstable (main) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ndppd/+bug/1573475/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1573475] Re: Sync ndppd 0.2.5-2 (universe) from Debian unstable (main)
Hi The killer bugfix is that ndppd 0.2.4 needs the interface to be in promisc mode for ndppd to work. This means the package is badly broken. If you are reluctant to take this version, someone should at least backport the fix: https://github.com/DanielAdolfsson/ndppd/commit/cb23cdbeac158b9e93425fa22fe89235f08cef7b This commit is not really minimal, since it also add some logging. But it is the nearest thing I could find. That killer bug is documented there: https://github.com/DanielAdolfsson/ndppd/issues/13 -- nirgal@d.o -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1573475 Title: Sync ndppd 0.2.5-2 (universe) from Debian unstable (main) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ndppd/+bug/1573475/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
