------- Comment From [email protected] 2016-02-04 02:52 EDT------- HI, (In reply to comment #0) > When I configure a qeth OSA device, the installer asks for device type, > device and protocol layer: > > Please choose the type of your primary network interface that you will need > for > > installing the Debian system (via NFS or HTTP). Only the listed devices are > > supported. > Network device type: > 1: ctc: Channel to Channel (CTC) or ESCON connection, > 2: qeth: OSA-Express in QDIO mode / HiperSockets, > 3: iucv: Inter-User Communication Vehicle - available for VM guests only, > > > 4: virtio: KVM VirtIO, > Prompt: '?' for help> 2 > 2 > > Please select the OSA-Express QDIO / HiperSockets device. > Device: > 1: 0.0.f5f0-0.0.f5f1-0.0.f5f2 [*], > Prompt: '?' for help, default=1> 1 > 1 > > By default OSA-Express cards use layer3 mode. In that mode LLC headers are > removed from incoming IPv4 packets. Using the card in layer2 mode will make > it > keep the MAC addresses of IPv4 packets. > Use this device in layer2 mode? > 1: Yes [*] 2: No > Prompt: '?' for help, default=1> > > The last question experienced a change according to > https://bugs.launchpad.net/ubuntu/+source/s390-netdevice/+bug/1526801 > Layer2 is the default, which is correct, since the qeth driver uses layer2 > as default as well. >
I wonder why the default has been changed at all. The default is just a guess. The s390-netdevice does not have any heuristics to determine a potential correct default and I would have to investigate if that is possible. The system administrator should provide information about whether layer2 or layer2 is used for a particular network interface. Statement like "By default OSA-Express cards" are incorrect as the modes can be configured. The same applies for HiperSocket devices. And also there is real and virtual OSA/HiperSockets. One last note, if you misconfigure the layer2 setting you want get a network connection. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1541544 Title: ubuntu-installer makes a contradictional statement regarding layer2/layer3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/debian-installer/+bug/1541544/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
