com.fix.local.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>com.fix.local</string>
    <key>ProgramArguments</key>
    <array>
        <string>/usr/sbin/discoveryutil</string>
        <string>activedirectory</string>
        <string>yes</string>
    </array>
    <key>RunAtLoad</key>
    <true/>
    <key>ServiceDescription</key>
    <string>.local discoveryd fix</string>
</dict>
</plist>

The string on line 10 is incorrect. It should be:

    <string>mdnsactivedirectory</string>

Also tested on 10.10.3 update and DNS is still broken, and this continues to fix/bandaid the issue.

+1