Certificate of ownership -- used to secure against IP address spoofing, especially for IPv4 and regular IPv6.

include/ZeroTierOne.h

@@ -136,6 +136,11 @@ extern "C" {
  */
 #define ZT_MAX_CAPABILITY_RULES 64
 
+/**
+ * Maximum number of certificates of ownership to assign to a single network member
+ */
+#define ZT_MAX_CERTIFICATES_OF_OWNERSHIP 4
+
 /**
  * Global maximum length for capability chain of custody (including initial issue)
  */