Bonding not working with IPv6

[JSE]

Description: Ubuntu Trusty Tahr (development branch)
Release: 14.04

When bonding ethernet interfaces errors are popping up when IPv6 is enabled (as default in Ubuntu Trusty Tahr):

[ 577.934592] IPv6: bond0: IPv6 duplicate address fd23:c818:c56c:1:e0cb:e8eb:5c70:205 detected!
[ 578.358557] IPv6: bond0: IPv6 duplicate address fd23:c818:c56c:1:225:90ff:fe86:ce0c detected!
[ 578.738577] IPv6: bond0: IPv6 duplicate address fd23:c818:c56c:1:c1de:3937:317f:5828 detected!
[ 579.518491] IPv6: bond0: IPv6 duplicate address fd23:c818:c56c:1:d893:fa67:5e29:2648 detected!
[ 579.518515] IPv6: ipv6_create_tempaddr: regeneration time exceeded - disabled temporary address support
[ 593.429383] IPv6: bond0: IPv6 duplicate address fd23:c818:c56c:1:225:90ff:fe86:ce0c detected!
---
ApportVersion: 2.13.2-0ubuntu3
Architecture: amd64
DistroRelease: Ubuntu 14.04
InstallationDate: Installed on 2014-02-14 (0 days ago)
InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140214)
Package: ifenslave 2.4
PackageArchitecture: all
ProcVersionSignature: Ubuntu 3.13.0-8.28-generic 3.13.2
Tags: trusty
Uname: Linux 3.13.0-8-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

_MarkForUpload: True

[Stéphane Graber (stgraber)]

Can you please provide your /etc/network/interfaces as well as the output of "ifconfig -a"?

[Chris J Arges (arges)]

I am also hitting this issue with a very basic bonding example:

$ cat /etc/network/interfaces
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet manual
bond-master bond0
bond-primary eth0

auto eth1
iface eth1 inet manual
bond-master bond0

auto bond0
iface bond0 inet dhcp
bond-mode active-backup
bond-miimon 100
bond-slaves none

$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 state UP group default qlen 1000
    link/ether 52:54:00:76:06:28 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::5054:ff:fe76:628/64 scope link
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 state UP group default qlen 1000
    link/ether 52:54:00:76:06:28 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::5054:ff:fe76:628/64 scope link
       valid_lft forever preferred_lft forever
4: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether 52:54:00:76:06:28 brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.224/24 brd 192.168.122.255 scope global bond0
       valid_lft forever preferred_lft forever
    inet6 fe80::5054:ff:fe76:628/64 scope link tentative dadfailed
       valid_lft forever preferred_lft forever

/var/log/kern.log:
Mar 19 21:52:49 lp1280362 kernel: [ 4.043238] bonding: Ethernet Channel Bonding Driver: v3.7.1 (April 27, 20
11)
Mar 19 21:52:49 lp1280362 kernel: [ 4.264717] kvm: Nested Virtualization enabled
Mar 19 21:52:49 lp1280362 kernel: [ 4.373163] ppdev: user-space parallel port driver
Mar 19 21:52:49 lp1280362 kernel: [ 4.581661] bonding: bond0: Setting MII monitoring interval to 100.
Mar 19 21:52:49 lp1280362 kernel: [ 4.592622] bonding: bond0: setting mode to active-backup (1).
Mar 19 21:52:49 lp1280362 kernel: [ 4.593091] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready
Mar 19 21:52:49 lp1280362 kernel: [ 4.661884] bonding: bond0: Adding slave eth1.
Mar 19 21:52:49 lp1280362 kernel: [ 4.662189] 8139cp 0000:00:07.0 eth1: link up, 100Mbps, full-duplex, lpa 0
x05E1
Mar 19 21:52:49 lp1280362 kernel: [ 4.662363] bonding: bond0: making interface eth1 the new active one.
Mar 19 21:52:49 lp1280362 kernel: [ 4.664071] bonding: bond0: enslaving eth1 as an active interface with an
up link.
Mar 19 21:52:49 lp1280362 kernel: [ 4.664076] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
Mar 19 21:52:49 lp1280362 kernel: [ 4.666837] bonding: bond0: Adding slave eth0.
Mar 19 21:52:49 lp1280362 kernel: [ 4.667201] bonding: bond0: enslaving eth0 as a backup interface with an u
p link.
Mar 19 21:52:49 lp1280362 kernel: [ 4.680131] bonding: bond0: Setting eth0 as primary slave.
Mar 19 21:52:49 lp1280362 kernel: [ 4.680132] bonding: bond0: making interface eth0 the new active one.
Mar 19 21:52:49 lp1280362 kernel: [ 4.752194] IPv6: bond0: IPv6 dupli...

[JSE (jse.nl)]

Any progress on a fix?

[MTiVi (mtivi)]

In my Trusty with all updates for today it works with this configuration:
auto eth0
iface eth0 inet manual
  bond-master bond0
  bond-primary eth2

auto eth2
  iface eth2 inet manual
  bond-master bond0

auto bond0
iface bond0 inet static
  address 212.XXX.YYY.206
  netmask 255.255.255.0
  network 212.XXX.YYY.0
  gateway 212.XXX.YYY.1
  dns-nameservers 212.XXX.YYY.2

  bond-mode 4
  bond-miimon 100
  bond-slaves none
  bond-xmit_hash_policy 1

iface bond0 inet6 static
  address 2010:ZZZZ:WWWW:2::ce
  netmask 64
  gateway 2010:ZZZZ:WWWW:2::1

[TJ (tj)]

This is still a problem for 16.04