network problem after install RHEL 7.2 on virtual machine

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https://access.redhat.com/discussions/2173111

I have the same network problem with Red Hat 7.2.

I just installed 7.2 on virtual machine hosted by ESX 5,5, configured network, it worked fine. but after reboot, the VM lost public network connection. I have to logon console then run following command to enable network connection:

service network restart.

What's the root cause? how to fix it?

The following are output of nmcli:

nmcli dev status

DEVICE TYPE STATE CONNECTION

virbr0 bridge connected virbr0

ens192 ethernet connected ens192

ens224 ethernet connected ens224

virbr0-nic tap connected virbr0-nic

lo loopback unmanaged --

nmcli con show ens192 | grep auto

connection.autoconnect: yes

connection.autoconnect-priority: 0

connection.autoconnect-slaves: -1 (default)

802-3-ethernet.auto-negotiate: yes

802-3-ethernet.mtu: auto

ipv4.ignore-auto-routes: no

ipv4.ignore-auto-dns: no

ipv6.method: auto

ipv6.ignore-auto-routes: no

ipv6.ignore-auto-dns: no

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