UserAgent: Mozilla/5.0 (X11; CrOS aarch64 10895.78.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.120 Safari/537.36
Platform: 10895.78.0 (Official Build) stable-channel bob

Example URL:

Steps to reproduce the problem:
1. Set system clock to wrong time
2. Connect to IPv6-only Wi-Fi network with NAT64/DNS64
3. Turn ChromeOS off and on again

What is the expected behavior?
System clock should get synced from Google servers during boot time

What went wrong?
System clock stay unsynchronized unless you connect to a network with native IPv4.

Did this work before? No 

Chrome version: 69.0.3497.120  Channel: stable
OS Version: 10895.78.0
Flash Version: N/A