Github user jayapalu commented on a diff in the pull request: https://github.com/apache/cloudstack/pull/1883#discussion_r102649918 --- Diff: utils/src/main/java/com/cloud/utils/net/NetUtils.java --- @@ -83,9 +83,19 @@ public final static int DEFAULT_AUTOSCALE_POLICY_INTERVAL_TIME = 30; public final static int DEFAULT_AUTOSCALE_POLICY_QUIET_TIME = 5 * 60; private final static Random s_rand = new Random(System.currentTimeMillis()); - - public static long createSequenceBasedMacAddress(final long macAddress) { - return macAddress | 0x060000000000l | (long)s_rand.nextInt(32768) << 25 & 0x00fffe000000l; + private final static long prefix = 0x1e; + + public static long createSequenceBasedMacAddress(final long macAddress, long globalConfig) { --- End diff -- It is not possible for macAddress, globalConfig to less than zero. For globalconfig maximum value 255 is allowed. macAddress value is coming from the DB (ipVO)
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