** Description changed: [Impact] - * Infiniband users relying on DHCP can't use DHCP relay. + * Infiniband users relying on DHCP can't use DHCP relay. [Test Case] - * Comment #13 - * Mellanox has tested themselves. - * Clear way of knowing if fix worked (tcpdump). + * Comment #13 + * Mellanox has tested themselves. + * Clear way of knowing if fix worked (tcpdump). [Regression Potential] - * Only related to Infiniband. - * Infiniband support could stop working (unlikely, already tested). + * Only related to Infiniband. + * Infiniband support could stop working (unlikely, already tested). [Other Info] - - None - - [ Original Description ] - - * Anything else you think is useful to include - * Anticipate questions from users, SRU, +1 maintenance, security teams and the Technical Board - * and address these questions in advance DHCP client is sending discover with Unicast type request for the offer, in this configuration of IB to ETH through a relay we need the type to be broadcast. The issue is that when using dhclient from the client on Ubuntu (and only on Ubuntu) with MOFED or inbox driver, we see that that DHCP server offers in unicast instead of broadcast. It seems there is no way to correct this from the client side using dhclient configuration file. this issue exist even when we use always-broadcast statement in configuration file. in other vendors we see that discover request type is broadcast. attached pcap files from working (other vendor) and not working (Ubuntu) clients. DHCP CLIENT (IPoIB) Ubuntu 14.04 kernel 3.13.0-74 Mellanox OFED 3.1-1.0.3 or inbox driver isc-dhcp-client 4.2.4-7ubuntu12.3
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1529815 Title: InfiniBand DHCP flow with PRA and DHCP relay not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1529815/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
