Nginx not spawning both ipv4 and ipv6 workers

[geuis]

So I was finally able to resolve this, but not in any way I've seen
described anywhere else.

I set "net.ipv6.bindv6only = 1" in /etc/sysctl.conf and reloaded via "sudo
sysctl -p". Then with the configuration "listen 80; listen [::]:80;" I now
get my workers split evenly between ipv4 and ipv6 and now I can connect from
either ip source.

nginx    2096 www-data    6u  IPv4 286321      0t0  TCP *:http (LISTEN)
nginx    2096 www-data    7u  IPv6 286322      0t0  TCP *:http (LISTEN)
nginx    2097 www-data    6u  IPv4 286321      0t0  TCP *:http (LISTEN)
nginx    2097 www-data    7u  IPv6 286322      0t0  TCP *:http (LISTEN)
nginx    2098 www-data    6u  IPv4 286321      0t0  TCP *:http (LISTEN)
nginx    2098 www-data    7u  IPv6 286322      0t0  TCP *:http (LISTEN)
nginx    2099 www-data    6u  IPv4 286321      0t0  TCP *:http (LISTEN)
nginx    2099 www-data    7u  IPv6 286322      0t0  TCP *:http (LISTEN)
nginx    2100 www-data    6u  IPv4 286321      0t0  TCP *:http (LISTEN)
nginx    2100 www-data    7u  IPv6 286322      0t0  TCP *:http (LISTEN)
nginx    2101 www-data    6u  IPv4 286321      0t0  TCP *:http (LISTEN)
nginx    2101 www-data    7u  IPv6 286322      0t0  TCP *:http (LISTEN)
nginx    2102 www-data    6u  IPv4 286321      0t0  TCP *:http (LISTEN)
nginx    2102 www-data    7u  IPv6 286322      0t0  TCP *:http (LISTEN)
nginx    2103 www-data    6u  IPv4 286321      0t0  TCP *:http (LISTEN)
nginx    2103 www-data    7u  IPv6 286322      0t0  TCP *:http (LISTEN)

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,268460,268522#msg-268522