Public bug reported: Release: Ubuntu 14.04.1 LTS Version: 4.2.4-7ubuntu12
The current DHCP package in Ubuntu can't handle IPoIB clients. For IB, Mellanox uses IPoIB, which is “Eth emulator” for the control path. DHCP is not working in this mode without a patch for DHCP server. ===================== >From IETF documentation: http://git.openfabrics.org/pub/scm/~rupertd/docs/release_notes/ipoib_release_notes.txt ... "Note: Two patches for DHCP are required for supporting IPoIB. The patch files for DHCP v3.0.4 are available under the docs/dhcp/ directory. Standard DHCP fields holding MAC addresses are not large enough to contain an IPoIB hardware address. To overcome this problem, DHCP over InfiniBand messages convey a client identifier field used to identify the DHCP session. This client identifier field can be used to associate an IP address with a client identifier value, such that the DHCP server will grant the same IP address to any client that conveys this client identifier." ... "In order to use a DHCP client identifier, you need to first create a configuration file that defines the DHCP client identifier. Then run the DHCP client with this file using the following command: dhclient cf <client conf file> <IB network interface name> Example of a configuration file for the ConnectX (PCI Device ID 26428), called dhclient.conf:Ubuntu 14.04.1 LTS # The value indicates a hexadecimal number interface "ib1" { send dhcp-client-identifier ff:00:00:00:00:00:02:00:00:02:c9:00:00:02:c9:03:00:00:10:39; } " ** Affects: isc-dhcp (Ubuntu) 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/1401141 Title: IPoIB does not work on Ubuntu due to DHCP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1401141/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
