Oh. I guess that's not a module any more, because I'm behind the times on my legacy IPv4 network. :)
So, to check if this is the problem, you can temporarily disable IPv6: sauer@pyro:~$ ip addr show lo 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever sauer@pyro:~$ sudo sysctl net.ipv6.conf.all.disable_ipv6 net.ipv6.conf.all.disable_ipv6 = 0 sauer@pyro:~$ sudo sysctl -w net.ipv6.conf.all.disable_ipv6=1 net.ipv6.conf.all.disable_ipv6 = 1 sauer@pyro:~$ ip addr show lo 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo Note that the IPv6 translation address pops up on all interfaces when the disable setting is 0, and goes away immediately when the disable setting is set to 1. To make this permanent on 12.04, create a file named /etc/sysctl.conf.d/60-disableipv6.conf and add a line that says net.ipv6.conf.all.disable_ipv6 = 1. I'm partial to running: sauer@pyro:~$ echo "net.ipv6.conf.all.disable_ipv6 = 1" | sudo tee /etc/sysctl.d/60-disableipv6.conf net.ipv6.conf.all.disable_ipv6 = 1 The setting in that file will take effect when you reboot or reload the sysctl settings by running "sudo start procps". This is still a bug in Precise, IMHO. If IPv6 is going to be enabled by default on the systems, then the Ping6 command should be set in backuppc.pl -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/782890 Title: no ping response on all hosts after upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/backuppc/+bug/782890/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs