jnimmo:DarkShadow:jnimmo:Will you turn on IPv6 for cache.google.com?
I see google.com goes through to Sydney on v6 vs BigPipe for v4
Can you please go to http://redirector.c.youtube.com/report_mapping ?
See if it reports:
bigpipe-akl1 (2403:9800:c048::/48)
Ah yes it does, I was only pinging Google before
Pinging Google IPv6 DNS (2001:4860:4860::8888) will get you a response from Sydney.