Workaround is to run the following
echo "net.ipv4.ip_forward=1" >> /etc/sysctl.conf
sysctl -w net.ipv4.ip_forward=1
Backport submitted in this PR:
Verified with version atomic-openshift-utils-3.2.47-1.git.0.34a924d, the "net.ipv4.ip_forward" setting is persisted on nodes.
[root@node ~]# sysctl net.ipv4.ip_forward
net.ipv4.ip_forward = 1
[root@node ~]# grep net.ipv4.ip_forward /etc/sysctl.conf
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.