From fc3e54a84cdf776955c211f0df9cfd6baa57d8d3 Mon Sep 17 00:00:00 2001
From: eenblam <ben.a.elam@gmail.com>
Date: Mon, 10 Sep 2018 12:34:06 -0700
Subject: [PATCH] Handle panic from type cast

---
 modules/net_sniff_parsers.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/modules/net_sniff_parsers.go b/modules/net_sniff_parsers.go
index 58ed68fe..88030c31 100644
--- a/modules/net_sniff_parsers.go
+++ b/modules/net_sniff_parsers.go
@@ -97,7 +97,11 @@ func mainParser(pkt gopacket.Packet, verbose bool) bool {
 			return false
 		}
 
-		ip := nlayer.(*layers.IPv4)
+		ip, ok := nlayer.(*layers.IPv4)
+		if !ok {
+			log.Debug("Could not extract network layer, skipping packet")
+			return false
+		}
 
 		tlayer := pkt.TransportLayer()
 		if tlayer == nil {