Part III
Case Studies in GPL Enforcement

Preface
20 Overview of Community Enforcement
20.1 Termination Begins Enforcement
20.2 Ongoing Violations
20.3 How are Violations Discovered?
20.4 First Contact
21 ThinkPenguin Wireless Router: Excellent CCS
21.1 Consumer Purchase and Unboxing
21.2 Root Filesystem and Kernel Compilation
21.3 U-Boot Compilation
21.4 Root Filesystem and Kernel Installation
21.5 U-Boot Installation
21.6 Firmware Comparison
21.7 Minor Annoyances
21.8 Lessons Learned
22 Bortez: Modified GCC SDK
22.1 Facts
22.2 Lessons
23 Bracken: a Minor Violation in a GNU/Linux Distribution
23.1 The Facts
23.2 Lessons Learned
24 Vigorien: Security, Export Controls, and GPL Compliance
24.1 The Facts
24.2 Lessons Learned
25 Haxil, Polgara, and Thesulac: Mergers, Upstream Providers and Radio Devices
25.1 The Facts
25.2 Lessons Learned