touch-packages team mailing list archive

[David Duffey <david.duffey@xxxxxxxxxxxxx>]

When reading the RFC it appears the broadcast bit specifies to the
server how the client wants the server to respond.  I have a few
requests:

1. Can you create pcaps in Ubuntu / RHEL with various settings (like
always broadcast on and off) so we can compare the behaviour and packet
changes

2. Is DHCP (program/code) on other treating IB differently (i.e. find
the code/patch and does it do a 'if IB broadcast, else unicast reuest"

3. Can you point to other bug fixes you might have found for this?

I found via google someone doing the following:

interface "ethX" {
   supersede dhcp-server-identifier 255.255.255.255;
}

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu.
https://bugs.launchpad.net/bugs/1529815

Title:
  InfiniBand DHCP flow with PRA and DHCP relay not working

Status in isc-dhcp package in Ubuntu:
  New

Bug description:
  
  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

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