RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Description of problem:

network-scripts do not update DNS2 if there is no /etc/resolv.conf.save

Preconditions:
NetworkManager disabled, eth0 configured with BOOTPROTO=static, DNS1 and DNS2 are set (and DNS1 != DNS2).

Steps to Reproduce:
1. If there is no /etc/resolv.conf.save skip steps 2-3
2. Set DNS1 and DNS2 in /etc/sysconfig/network-scripts/ifcfg-eth0 to addresses from /etc/resolv.conf.save
3. Restart network: service network restart.
4. Now eth0 is up, /etc/resolv.conf contains values from ifcfg-eth0, there is no /etc/resolv.conf.save
5. Change DNS2 only in /etc/sysconfig/network-scripts/ifcfg-eth0 to new value
6. Restart network: service network restart.

Actual results:
/etc/resolv.conf contains DNS1 and old DNS2

Expected results:
/etc/resolv.conf contains DNS1 and new DNS2

I have pushed a patch to upstream. Can you please try it?

https://git.fedorahosted.org/cgit/initscripts.git/commit/?id=da08727f3bbcc419096b160968aee83104bb7cf6

It works. Thanks.

https://git.fedorahosted.org/cgit/initscripts.git/commit/?h=rhel6-branch&id=2a31b3e2d30f6478896553b866cf790463b4144e

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-2016-0951.html