Bug 1271656

Summary: MTU/MAC not set in dracut
Product: Red Hat Enterprise Linux 7 Reporter: Jan Stodola <jstodola>
Component: dracutAssignee: Lukáš Nykrýn <lnykryn>
Status: CLOSED ERRATA QA Contact: Release Test Team <release-test-team-automation>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.2CC: dracut-maint-list, harald, msvistun
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-11-04 07:59:24 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1256306, 1289485, 1313485    

Description Jan Stodola 2015-10-14 12:44:18 UTC
Description of problem:
Dracut allows to set MAC address and MTU for the device being configured. However, it doesn't work in all cases, see the examples bellow:

1) format: ip=<interface>:{dhcp|on|any|dhcp6|auto6}[:[<mtu>][:<macaddr>]]

ip=ens3:dhcp:1000                       MTU:fail  MAC:N/A
ip=ens3:dhcp::54:52:00:ab:cd:ef         fails to boot: Sorry, unknown value 'ab'
ip=ens3:dhcp::[54:52:00:ab:cd:ef]       MTU:N/A   MAC:fail
ip=ens3:dhcp:1000:54:52:00:ab:cd:ef     fails to boot: Sorry, unknown value 'ab'
ip=ens3:dhcp:1000:[54:52:00:ab:cd:ef]   MTU:fail  MAC:fail


2) format: ip=<client-IP>:[<peer>]:<gateway-IP>:<netmask>:<client_hostname>:<interface>:{none|off|dhcp|on|any|dhcp6|auto6|ibft}:[:[<mtu>][:<macaddr>]]

ip=192.168.122.20::192.168.122.1:24:test:ens3:none:1000                      MTU:OK   MAC:N/A
ip=192.168.122.20::192.168.122.1:24:test:ens3:none::54:52:00:ab:cd:ef        MTU:N/A  MAC:OK
ip=192.168.122.20::192.168.122.1:24:test:ens3:none::[54:52:00:ab:cd:ef]      MTU:N/A  MAC:fail
ip=192.168.122.20::192.168.122.1:24:test:ens3:none:1000:54:52:00:ab:cd:ef    MTU:OK   MAC:fail
ip=192.168.122.20::192.168.122.1:24:test:ens3:none:1000:[54:52:00:ab:cd:ef]  MTU:OK   MAC:fail

ip=::::test:ens3:dhcp:1000                       MTU:fail  MAC:N/A
ip=::::test:ens3:dhcp::54:52:00:ab:cd:ef         MTU:N/A   MAC:fail
ip=::::test:ens3:dhcp::[54:52:00:ab:cd:ef]       MTU:N/A   MAC:fail
ip=::::test:ens3:dhcp:1000:54:52:00:ab:cd:ef     MTU:fail  MAC:fail
ip=::::test:ens3:dhcp:1000:[54:52:00:ab:cd:ef]   MTU:fail  MAC:fail

("fail" means that MTU or MAC wasn't set according to the ip= parameter)

Version-Release number of selected component (if applicable):
dracut-033-353.el7

How reproducible:
always

Steps to Reproduce:
1. try to set MAC/MTU using the examples above

Actual results:
MAC/MTU is not set

Expected results:
MAC/MTU is set correctly

Additional info:

Comment 4 Jan Stodola 2016-08-11 08:25:45 UTC
Retested with dracut-033-450.el7, all the following test cases work as expected:

ip=ens3:dhcp:1000                       MTU:OK    MAC:N/A
ip=ens3:dhcp::54:52:00:ab:cd:ef         MTU:N/A   MAC:OK
ip=ens3:dhcp::[54:52:00:ab:cd:ef]       MTU:N/A   MAC:OK
ip=ens3:dhcp:1000:54:52:00:ab:cd:ef     MTU:OK    MAC:OK
ip=ens3:dhcp:1000:[54:52:00:ab:cd:ef]   MTU:OK    MAC:OK

ip=::::test:ens3:dhcp:1000                       MTU:OK    MAC:N/A
ip=::::test:ens3:dhcp::54:52:00:ab:cd:ef         MTU:N/A   MAC:OK
ip=::::test:ens3:dhcp::[54:52:00:ab:cd:ef]       MTU:N/A   MAC:OK
ip=::::test:ens3:dhcp:1000:54:52:00:ab:cd:ef     MTU:OK    MAC:OK
ip=::::test:ens3:dhcp:1000:[54:52:00:ab:cd:ef]   MTU:OK    MAC:OK

ip=192.168.122.20::192.168.122.1:24:test:ens3:none:1000                      MTU:OK    MAC:N/A
ip=192.168.122.20::192.168.122.1:24:test:ens3:none::54:52:00:ab:cd:ef        MTU:N/A   MAC:OK
ip=192.168.122.20::192.168.122.1:24:test:ens3:none::[54:52:00:ab:cd:ef]      MTU:N/A   MAC:OK
ip=192.168.122.20::192.168.122.1:24:test:ens3:none:1000:54:52:00:ab:cd:ef    MTU:OK    MAC:OK
ip=192.168.122.20::192.168.122.1:24:test:ens3:none:1000:[54:52:00:ab:cd:ef]  MTU:OK    MAC:OK

Moving to VERIFIED.

Comment 7 errata-xmlrpc 2016-11-04 07:59:24 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-2530.html