diff --git a/vendor/github.com/google/gopacket/layers/vrrp.go b/vendor/github.com/google/gopacket/layers/vrrp.go
new file mode 100644
index 0000000..ffaafe6
--- /dev/null
+++ b/vendor/github.com/google/gopacket/layers/vrrp.go
@@ -0,0 +1,156 @@
+// Copyright 2016 Google, Inc. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license
+// that can be found in the LICENSE file in the root of the source
+// tree.
+
+package layers
+
+import (
+	"encoding/binary"
+	"errors"
+	"net"
+
+	"github.com/google/gopacket"
+)
+
+/*
+	This layer provides decoding for Virtual Router Redundancy Protocol (VRRP) v2.
+	https://tools.ietf.org/html/rfc3768#section-5
+    0                   1                   2                   3
+    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   |Version| Type  | Virtual Rtr ID|   Priority    | Count IP Addrs|
+   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   |   Auth Type   |   Adver Int   |          Checksum             |
+   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   |                         IP Address (1)                        |
+   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   |                            .                                  |
+   |                            .                                  |
+   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   |                         IP Address (n)                        |
+   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   |                     Authentication Data (1)                   |
+   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   |                     Authentication Data (2)                   |
+   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+*/
+
+type VRRPv2Type uint8
+type VRRPv2AuthType uint8
+
+const (
+	VRRPv2Advertisement VRRPv2Type = 0x01 // router advertisement
+)
+
+// String conversions for VRRP message types
+func (v VRRPv2Type) String() string {
+	switch v {
+	case VRRPv2Advertisement:
+		return "VRRPv2 Advertisement"
+	default:
+		return ""
+	}
+}
+
+const (
+	VRRPv2AuthNoAuth    VRRPv2AuthType = 0x00 // No Authentication
+	VRRPv2AuthReserved1 VRRPv2AuthType = 0x01 // Reserved field 1
+	VRRPv2AuthReserved2 VRRPv2AuthType = 0x02 // Reserved field 2
+)
+
+func (v VRRPv2AuthType) String() string {
+	switch v {
+	case VRRPv2AuthNoAuth:
+		return "No Authentication"
+	case VRRPv2AuthReserved1:
+		return "Reserved"
+	case VRRPv2AuthReserved2:
+		return "Reserved"
+	default:
+		return ""
+	}
+}
+
+// VRRPv2 represents an VRRP v2 message.
+type VRRPv2 struct {
+	BaseLayer
+	Version      uint8          // The version field specifies the VRRP protocol version of this packet (v2)
+	Type         VRRPv2Type     // The type field specifies the type of this VRRP packet.  The only type defined in v2 is ADVERTISEMENT
+	VirtualRtrID uint8          // identifies the virtual router this packet is reporting status for
+	Priority     uint8          // specifies the sending VRRP router's priority for the virtual router (100 = default)
+	CountIPAddr  uint8          // The number of IP addresses contained in this VRRP advertisement.
+	AuthType     VRRPv2AuthType // identifies the authentication method being utilized
+	AdverInt     uint8          // The Advertisement interval indicates the time interval (in seconds) between ADVERTISEMENTS.  The default is 1 second
+	Checksum     uint16         // used to detect data corruption in the VRRP message.
+	IPAddress    []net.IP       // one or more IP addresses associated with the virtual router. Specified in the CountIPAddr field.
+}
+
+// LayerType returns LayerTypeVRRP for VRRP v2 message.
+func (v *VRRPv2) LayerType() gopacket.LayerType { return LayerTypeVRRP }
+
+func (v *VRRPv2) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
+
+	v.BaseLayer = BaseLayer{Contents: data[:len(data)]}
+	v.Version = data[0] >> 4 // high nibble == VRRP version. We're expecting v2
+
+	v.Type = VRRPv2Type(data[0] & 0x0F) // low nibble == VRRP type. Expecting 1 (advertisement)
+	if v.Type != 1 {
+		// rfc3768: A packet with unknown type MUST be discarded.
+		return errors.New("Unrecognized VRRPv2 type field.")
+	}
+
+	v.VirtualRtrID = data[1]
+	v.Priority = data[2]
+
+	v.CountIPAddr = data[3]
+	if v.CountIPAddr < 1 {
+		return errors.New("VRRPv2 number of IP addresses is not valid.")
+	}
+
+	v.AuthType = VRRPv2AuthType(data[4])
+	v.AdverInt = uint8(data[5])
+	v.Checksum = binary.BigEndian.Uint16(data[6:8])
+
+	// populate the IPAddress field. The number of addresses is specified in the v.CountIPAddr field
+	// offset references the starting byte containing the list of ip addresses
+	offset := 8
+	for i := uint8(0); i < v.CountIPAddr; i++ {
+		v.IPAddress = append(v.IPAddress, data[offset:offset+4])
+		offset += 4
+	}
+
+	//	any trailing packets here may be authentication data and *should* be ignored in v2 as per RFC
+	//
+	//			5.3.10.  Authentication Data
+	//
+	//			The authentication string is currently only used to maintain
+	//			backwards compatibility with RFC 2338.  It SHOULD be set to zero on
+	//	   		transmission and ignored on reception.
+	return nil
+}
+
+// CanDecode specifies the layer type in which we are attempting to unwrap.
+func (v *VRRPv2) CanDecode() gopacket.LayerClass {
+	return LayerTypeVRRP
+}
+
+// NextLayerType specifies the next layer that should be decoded. VRRP does not contain any further payload, so we set to 0
+func (v *VRRPv2) NextLayerType() gopacket.LayerType {
+	return gopacket.LayerTypeZero
+}
+
+// The VRRP packet does not include payload data. Setting byte slice to nil
+func (v *VRRPv2) Payload() []byte {
+	return nil
+}
+
+// decodeVRRP will parse VRRP v2
+func decodeVRRP(data []byte, p gopacket.PacketBuilder) error {
+	if len(data) < 8 {
+		return errors.New("Not a valid VRRP packet. Packet length is too small.")
+	}
+	v := &VRRPv2{}
+	return decodingLayerDecoder(v, data, p)
+}