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@@ -74,9 +74,10 @@ I'm vaccinated against COVID-19. Are you?
 <A HREF="#privacy"    >#privacy</A>,
 <A HREF="/thegame"    >/thegame</A>;
 <B>knowledge</B>:
-<A HREF="/knowledge/alpine"       >alpine</A>,
+<A HREF="/knowledge/alpine"      >alpine</A>,
 <A HREF="/knowledge/cat/"        >cat(1)</A>,
 <A HREF="/knowledge/cryptography">cryptography</A>,
+<A HREF="/knowledge/postmarketos">postmarketOS</A>,
 <A HREF="/knowledge/netbsd/"     >NetBSD</A>,
 <A HREF="/knowledge/true"        >true(1)</A>,
 <A HREF="/knowledge/x200t"       >X200T</A>;
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+<!DOCTYPE html>
+<HTML LANG="en">
+<HEAD>
+<LINK HREF="http://www.trinity.moe/postmarketos" REL="canonical" />
+<LINK HREF="https://raw.githubusercontent.com/devenblake/homepage/main/favicon.ico" REL="shortcut icon" TYPE="image/x-icon" />
+<LINK HREF="/css/blank.css" ID="styling" REL="stylesheet" />
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+<TITLE>postmarketOS</TITLE>
+</HEAD>
+<BODY>
+<P><A HREF="/">~ Return to the rest of the site</A></P>
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+<H1>postmarketOS</H1>
+<H3>updated 2021-10-27</H3>
+<HR ALIGN="left" SIZE="1" WIDTH="25%" />
+<P>
+postmarketOS is based on Alpine Linux and this site's <A HREF="/knowledge/alpine">knowledge article for Alpine</A> applies to postmarketOS as well.
+</P>
+<H2>Random MAC address generation on Wifi</H2>
+<P>
+By default, postmarketOS will generate a random software MAC address when connecting to a new WLAN network.
+You can disable this by adding a NetworkManager rule.
+In <CODE>/etc/NetworkManager/conf.d/</CODE> you can make a file with any name that has the following:
+</P>
+<P><CODE><PRE>
+[device]
+wifi.scan-rand-mac-address=no
+</PRE></CODE></P>
+<P>
+On a live system you can then <CODE>rc-service networkmanager restart</CODE> to restart NetworkManager and have it load the new configuration.
+</P>
+</BODY>
+</HTML>
