Not able to access site after letsencrypt cert expiry and rebuild due to IPV6

I worked with @Umashankar_Ankuri and this looks like a case where the domain’s IPv6 address was configured incorrectly causing the validation check to fail.

https://github.com/Neilpang/acme.sh/issues/867

@Umashankar_Ankuri can confirm the problem once he fixes his DNS settings.

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