Can I get a physical copy of the source code?

Yes, to receive a copy of the GPL Source Code sent to you on a DVD send a check for $10 made out to "Actiontec GPL Code Request" to the address below.  

Attn: Actiontec GPL Code Request
Actiontec Electronics, Inc.
910 Pinon Ranch View Suite #200
Colorado Springs, Colorado 80907 USA

Please include the following: 

• Model Number of your device
• Firmware Version of your device