ipv 4 and 6

[Thomas Ward]

Just an FYI, but nginx and freenginx are **completely independent 
products**.  If you are looking for support/questions with regards to 
the NGINX in ubuntu, you should be reaching out to nginx.org mailing 
lists or support mechanisms from Ubuntu.


On 2026-07-29 11:40, Paul wrote:
> nginx/1.18.0 (Ubuntu).   For decades we have never explicitly 
> "listened" for 1pv6, using only "listen 443 ssl;" on a couple of dozen 
> websites.
>
> As of two days ago, W3C (world wide web consortium) html, css, etc 
> verification tools are no longer functional -- our websites "time out" 
> "500 Can't connect to mysite.com:443 (Connection timed out)"
>
> W3C have nslookup showing ipv4 and ipv6 addresses.  There is nothing 
> in our firewalls "denying" them, there is nothing in the nginx logs.
>
> I'm reticent to just add trillions of ipv6 possibilities of abuse 
> (we're experiencing om/off ddos attacks from ai/automated/bots to the 
> tune of 56^6/day).
>
> Any thoughts?
>
> Thanks -- Paul
>
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