updated included zerotierone src

zerotierone/node/MulticastGroup.hpp

@@ -60,6 +60,16 @@ public:
 	{
 	}
 
+	MulticastGroup(const char *s)
+	{
+		fromString(s);
+	}
+
+	MulticastGroup(const std::string &s)
+	{
+		fromString(s.c_str());
+	}
+
 	/**
 	 * Derive the multicast group used for address resolution (ARP/NDP) for an IP
 	 *
@@ -96,6 +106,22 @@ public:
 		return std::string(buf);
 	}
 
+	/**
+	 * Parse a human-readable multicast group
+	 *
+	 * @param s Multicast group in hex MAC/ADI format
+	 */
+	inline void fromString(const char *s)
+	{
+		char hex[17];
+		unsigned int hexlen = 0;
+		while ((*s)&&(*s != '/')&&(hexlen < (sizeof(hex) - 1)))
+			hex[hexlen++] = *s;
+		hex[hexlen] = (char)0;
+		_mac.fromString(hex);
+		_adi = (*s == '/') ? (uint32_t)Utils::hexStrToULong(s + 1) : (uint32_t)0;
+	}
+
 	/**
 	 * @return Multicast address
 	 */