[Bug 1914740] Re: IPs are not assigned for Hipersockets in DHCP mode

Dimitri John Ledkov 1914740 at bugs.launchpad.net
Wed Feb 24 09:00:12 UTC 2021


My preference would be to fix networkd, if that fails netplan, and isc-
dhcp only if there is syntax to online the device in the right l2/l3
state via kernel cmdline and that one needs to complete install over it.

For example, does automatic chzdev device enablement provides
autoconfiguration for hipersockets in l3? in that case it would be neat
for ip=dhcp to just do the right thing.

** Also affects: systemd (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: systemd (Ubuntu)
       Status: New => Confirmed

** Changed in: netplan.io (Ubuntu)
       Status: New => Confirmed

** Also affects: isc-dhcp (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: isc-dhcp (Ubuntu)
   Importance: Undecided => Low

** Changed in: isc-dhcp (Ubuntu)
       Status: New => Confirmed

** Changed in: systemd (Ubuntu)
   Importance: Undecided => High

** Changed in: netplan.io (Ubuntu)
   Importance: Undecided => Low

** Changed in: isc-dhcp (Ubuntu)
   Importance: Low => Wishlist

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https://bugs.launchpad.net/bugs/1914740

Title:
  IPs are not assigned for Hipersockets in DHCP mode

Status in Ubuntu on IBM z Systems:
  Incomplete
Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in netplan.io package in Ubuntu:
  Confirmed
Status in systemd package in Ubuntu:
  Confirmed

Bug description:
  ---Problem Description---
  IPs are not getting assigned for Hipersockets in DHCP mode
   
  Contact Information = Asha Shekharappa(ashshekh at in.ibm.com)  Sankar(sankar453 at in.ibm.com) 
   
  ---uname output---
  52-Ubuntu SMP Thu Sep 10 10:59:04 UTC 2020 s390x s390x s390x GNU/Linux
   
  Machine Type = s390x 
   
  ---Debugger---
  A debugger is not configured
   
  ---Steps to Reproduce---
   Ubuntu 20.04
  Netplan with systemd-networkd as renderer

  Creating ethernet connection on Hipersockets device in DHCP mode fails
  to assign IPs

  1. Configure a Hipersockets device
     chzdev -e 0.0.8f00

  2. Create a .yaml file with the below details

  network:
      version: 2
      ethernets:
          enc8f00:
              dhcp4: yes

  3. netplan apply

  
  4. The IP is not assigned as seen below

  root at M96SANKAR:/etc/netplan# ip a s

  enc8f00: <BROADCAST,MULTICAST,NOARP,UP,LOWER_UP> mtu 32768 qdisc mq state UP group default qlen 1000
      link/ether fe:da:af:44:08:02 brd ff:ff:ff:ff:ff:ff

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