rafaelweingartner commented on a change in pull request #3136: ipv6: Do not
allow Secondary IPv6 addresses to be EUI-64
URL: https://github.com/apache/cloudstack/pull/3136#discussion_r249408821
##########
File path: utils/src/main/java/com/cloud/utils/net/NetUtils.java
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@@ -1582,6 +1586,29 @@ public static IPv6Address ipv6LinkLocal(final String
macAddress) {
return EUI64Address(IPv6Network.LINK_LOCAL_NETWORK, macAddress);
}
+ /**
+ * When using StateLess Address AutoConfiguration (SLAAC) for IPv6 the
addresses
+ * choosen by hosts in a network are based on the 48-bit MAC address and
this is expanded to 64-bits
+ * with EUI-64
+ * FFFE is inserted into the address and these can be identified
+ *
+ * By converting the IPv6 Address to a byte array we can check the 11th
and 12th byte to see if the
+ * address is EUI064.
+ *
+ * See RFC4291 for more information
+ *
+ * @param address IPv6Address to be checked
+ * @return True if Address is EUI-64 IPv6
+ */
+ public static boolean isIPv6EUI64(final IPv6Address address) {
Review comment:
Awesome!!!
:+1:
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