document how to listen on localhost on both, IPv4 and IPv6 at the same time using SocksPort *:Port

Summary

SOCKSPort 127.0.0.1 9050
SOCKSPort [::1] 9050

How to combine both SOCKSPort lines into a single configuration line?

According to #11360 (closed) there should be a SocksPort *:Port syntax and this has been already implemented. However, nobody on the internet (search engines, forums, AI) seems to know how to do this.

Details

SocksPort 127.0.0.1:9100
SocksPort [::]:9100

Works as expected. Listens on both, 127.0.0.1 and :::9100. But how to combine both into the same command?

According to ticket Listen on IPv6 by default for SocksPort *:Port this should be possible.

I believe we implemented this.

Why not use 2 config lines? Because I have a lot of SocksPort and 1 line instead of 2 lines would make the config much shorter, simpler.

Here is what I tried already...

---

SocksPort 9100

results in: 127.0.0.1 (unexpected)

---

SocksPort 127.0.0.1:9100

results in: 127.0.0.1 (as expected)

---

results in: :::9100 (as expected)

SocksPort [::]:9100

---

SocksPort *:9100

results in: Syntax error

---

I do not wish to use 0.0.0.0 because I do not wish to listen on all interfaces but on localhost only.

How did I check on which ports Tor is listening?

sudo netstat -tulpen | grep 9100

What Tor version did I use?

tor --version

Tor version 0.4.8.12.

What is the expected behavior?

Tor's man page should explain this.