[Resolve] Zimbra starting zmconfigd...failed

Issues

        Starting zmconfigd...Failed.
Starting zmconfigd...failed.

Issue is /etc/hosts having 127.0.0.1 and ::1
zmconfigd was listening to ipv4, nc was trying to talk to ::1

Resolve

- Disable IPv6 in /etc/hosts
Commented out ::1 in /etc/hosts

- Disable IPv6 in /etc/sysctl.conf
vi /etc/sysctl.conf
Add in the bottom

net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1

Apply the change
sysctl -p


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