alexa device not registered via wsl nmap

here’s my current setup:

First, the host machine Windows specs (let’s call this section HM):

1. Edition Windows 11 Home
2. Version 21H2
3. Installed on ‎12/‎5/‎2021
4. OS build 22000.434
5. Experience Windows Feature Experience Pack 1000.22000.434.0

Second, the corresponding host machine device (D) specs (let’s call this section HMD):

1. Device name —
2. Processor 11th Gen Intel(R) Core(TM) i3-1115G4 @ 3.00GHz 3.00 GHz
3. Installed RAM 8.00 GB (7.73 GB usable)
4. Device ID —
5. Product ID —
6. System type 64-bit operating system, x64-based processor

For the wsl version and other info, I ran the following with the output included:
wsl --list --verbose

  NAME                   STATE           VERSION
* Ubuntu                 Running         2
  docker-desktop         Running         2
  docker-desktop-data    Running         2

Here’s the version of the Ubuntu container I’m running (via running lsb_release -a):

No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 20.04 LTS
Release:        20.04
Codename:       focal

Lastly, in terms of setup, here’s my host machine’s docker version (via docker --version):

Docker version 20.10.11, build dea9396

With all that disclosed, here’s some final context of what’s going on and (finally) my question(s). On my local machine (and LAN), I run this: sudo nmap -sn 192.168.1.0/24. The output of that command is this:

Starting Nmap 7.92 ( https://nmap.org ) at 2022-01-17 09:44 Central Standard Time
Nmap scan report for raspberryshake.attlocal.net (192.168.1.74)
Host is up (0.024s latency).
MAC Address: B8:27:EB:69:C6:C6 (Raspberry Pi Foundation)
Nmap scan report for amazon-7e9f85f5b.attlocal.net (192.168.1.237)
Host is up (0.40s latency).
MAC Address: 00:71:47:21:7B:1A (Amazon Technologies)
Nmap scan report for dsldevice.attlocal.net (192.168.1.254)
Host is up (0.010s latency).
MAC Address: 08:9B:B9:89:B2:82 (Nokia Solutions and Networks GmbH & KG)
Nmap scan report for host.docker.internal (192.168.1.243)
Host is up.
Nmap done: 256 IP addresses (4 hosts up) scanned in 4.82 seconds

Now, after entering the Ubuntu container (as an aside, I might be incorrect in using the container term, but that’s aside from the topic here – glad to receive feedback on that as well, though) and running the same command, I get the following:

[sudo] password for nbenton:
Starting Nmap 7.80 ( https://nmap.org ) at 2022-01-17 09:42 CST
Nmap scan report for raspberryshake.attlocal.net (192.168.1.74)
Host is up (0.016s latency).
Nmap scan report for host.docker.internal (192.168.1.243)
Host is up (0.00060s latency).
Nmap scan report for dsldevice.attlocal.net (192.168.1.254)
Host is up (0.010s latency).
Nmap done: 256 IP addresses (3 hosts up) scanned in 12.26 seconds

Do you see the difference? In the container, the amazon device is missing, and I don’t know why.

This post is starting the balloon, so I’ll conclude here with the following question:

• Why does the alexa (or amazon) device not register from the wsl side?

PS: yes, I’ve looked here, but that question+answer does not resolve my confusion.