diff --git a/package/ngrep/ngrep.mk b/package/ngrep/ngrep.mk
index fbfb999730..41d08d9f26 100644
--- a/package/ngrep/ngrep.mk
+++ b/package/ngrep/ngrep.mk
@@ -6,7 +6,7 @@
 
 NGREP_VERSION = 1_47
 NGREP_SITE = $(call github,jpr5,ngrep,V$(NGREP_VERSION))
-NGREP_LICENSE = BSD-4-Clause-like
+NGREP_LICENSE = BSD-4-Clause-like, BSD-3-Clause (tcpkill)
 NGREP_LICENSE_FILES = LICENSE
 NGREP_INSTALL_STAGING = YES
 # We're patching configure.in
@@ -20,9 +20,15 @@ NGREP_CONF_OPTS = \
 	--with-pcap-includes=$(STAGING_DIR)/usr/include/pcap \
 	--enable-pcre \
 	--disable-dropprivs \
-	--disable-pcap-restart \
-	--disable-tcpkill
+	--disable-pcap-restart
 
 NGREP_DEPENDENCIES = libpcap pcre
 
+ifeq ($(BR2_PACKAGE_LIBNET),y)
+NGREP_DEPENDENCIES += libnet
+NGREP_CONF_OPTS += --enable-tcpkill
+else
+NGREP_CONF_OPTS += --disable-tcpkill
+endif
+
 $(eval $(autotools-package))