Possible issue on dns resolution

Hello,

I am using microsocks in a Debian 12 OS and all works fine, except one thing:

Sometimes with some websites the socks5 connection fails with "host unreachable" error:

socks connect tcp 1.2.3.4:1080->www.hugedomains.com:443: unknown error host unreachable

I found that another user reported a similar issue in the past:
https://github.com/rofl0r/microsocks/issues/40#issuecomment-898233932

And the suggested solution to edit /etc/gai.conf and uncomment this line:

precedence ::ffff:0:0/96 100

But I still get occasional "host unreachable" errors.

Here is the "host" output for both domains:

host 10ksolutions.com
10ksolutions.com is an alias for traff-1.hugedomains.com.
traff-1.hugedomains.com is an alias for hdr-nlb9-41371129e8304c29.elb.us-east-1.amazonaws.com.
hdr-nlb9-41371129e8304c29.elb.us-east-1.amazonaws.com has address 52.71.57.184
hdr-nlb9-41371129e8304c29.elb.us-east-1.amazonaws.com has address 54.209.32.212

host www.hugedomains.com
www.hugedomains.com has address 104.26.7.37
www.hugedomains.com has address 172.67.70.191
www.hugedomains.com has address 104.26.6.37
www.hugedomains.com has IPv6 address 2606:4700:20::ac43:46bf
www.hugedomains.com has IPv6 address 2606:4700:20::681a:625
www.hugedomains.com has IPv6 address 2606:4700:20::681a:725

Any idea as to why it is failing in this case?

PS: I am running microsocks like this:

microsocks -p 1080

And the VPS has both IPv4 and IPv6 address.

Start by reproducing the failure with microsocks -p 1080 on Debian 12 using a dual-stack VPS, then compare DNS results and connection attempts for 10ksolutions.com and www.hugedomains.com. Review the behavior around IPv4 and IPv6 destination selection; done means identifying the cause of the intermittent host-unreachable errors and documenting or fixing the confirmed behavior.