--- a/bandwidthd.c	2016-05-06 17:13:29.000000000 -0400
+++ b/bandwidthd.c	2016-05-09 13:21:56.436443065 -0400
@@ -18,6 +18,8 @@
 // ****************************************************************************************
 
 #define SNAPLEN 100
+/* VLAN ethertype */
+#define VLAN_ETHERTYPE 0x8100
 
 static pcap_t *pd;
 
@@ -654,6 +656,7 @@
 void PacketCallback(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
     {
     unsigned int Counter;
+    unsigned short VLAN_Offset = 0;
 
     u_int caplen = h->caplen;
 	struct ether_header *eptr;
@@ -671,8 +674,11 @@
 	if (eptr->ether_type == htons(1537))
 		ParseBroadcast(p);
 
-    caplen -= IP_Offset;  // We're only measuring ip size, so pull off the ethernet header
-    p += IP_Offset; // Move the pointer past the datalink header
+    if(eptr->ether_type == htons(VLAN_ETHERTYPE))
+        if(IP_Offset == 14)
+            VLAN_Offset = 4;
+    caplen -= (IP_Offset + VLAN_Offset);  // We're only measuring ip size, so pull off the ethernet header
+    p += (IP_Offset + VLAN_Offset); // Move the pointer past the datalink header
 
     ip = (const struct ip *)p; // Point ip at the ip header