From 5920b0575219f06bf250cde7374e1bde6344e5f0 Mon Sep 17 00:00:00 2001
From: Dreamacro <305009791@qq.com>
Date: Tue, 12 Feb 2019 12:29:33 +0800
Subject: [PATCH] Fix: crash when ip is nil

---
 rules/ipcidr.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rules/ipcidr.go b/rules/ipcidr.go
index 597ac3e1..c2a02ef8 100644
--- a/rules/ipcidr.go
+++ b/rules/ipcidr.go
@@ -24,7 +24,7 @@ func (i *IPCIDR) IsMatch(metadata *C.Metadata) bool {
 	if i.isSourceIP {
 		ip = metadata.SourceIP
 	}
-	return i.ipnet.Contains(*ip)
+	return ip != nil && i.ipnet.Contains(*ip)
 }
 
 func (i *IPCIDR) Adapter() string {