[tor-relays] Auto-discovered IPv6 address [...] has not been found reachable.

[s7r]

Onion Operator wrote:

>> What if you configure the IPv6 address by hand in torrc?
> 
> for months my torrc had
> 
>    ORPort 443 IPv4Only
>    ORPort [2a02:a446:5ef1:1:d072:53ff:fef4:ea59]:443 IPv6Only
> 
>    Address XXX
> 
> and read in the logs:
> 
>    Unable to find IPv6 address for ORPort 443. You might want to specify
>    IPv4Only to it or set an explicit address or set Address.
> 
> (XXX had only the A record)

Add a second Address entry with the IPv6 address.

so:
ORPort 443 IPv4Only
ORPort [2a02:a446:5ef1:1:d072:53ff:fef4:ea59]:443 IPv6Only
Address XXX
Address [2a02:a446:5ef1:1:d072:53ff:fef4:ea59]

Where XXX is the hostname that has only an `A` record.

Or add an `AAAA` record with the IPv6 address to XXX hostname and use a 
single Address entry with `Address XXX`.

See if this works for you.

When IPv6 autodiscovery that was badly needed was coded maybe this 
particular use case was not considered.

I guess you IPv4 is Dynamic and IPv6 is static, which is why you use XXX 
with some kind of DynamicDNS?

Please test and let us know if it worked with the indications above, 
otherwise let me know so I'll open a Bug ticket.
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