diff --git a/utils/misc/src/main/java/org/onlab/packet/IGMP.java b/utils/misc/src/main/java/org/onlab/packet/IGMP.java
index e7abbd6..254f132 100644
--- a/utils/misc/src/main/java/org/onlab/packet/IGMP.java
+++ b/utils/misc/src/main/java/org/onlab/packet/IGMP.java
@@ -231,7 +231,7 @@
 
             IGMP igmp = new IGMP();
 
-            ByteBuffer bb = ByteBuffer.wrap(data);
+            final ByteBuffer bb = ByteBuffer.wrap(data, offset, length);
             igmp.igmpType = bb.get();
             igmp.resField = bb.get();
             igmp.checksum = bb.getShort();