diff --git a/dns/db.10.127 b/dns/db.10.127
index eded4cd..991b3ae 100644
--- a/dns/db.10.127
+++ b/dns/db.10.127
@@ -107,22 +107,24 @@ $TTL	604800
 142.0	IN	PTR	pan.icecat-jp3.tun30.neo.
 
 ; Point to Point Addresses
-1.10	IN	PTR	LanTian.pp.neo.
-1.69	IN	PTR	santost12.pp.neo.
-2.127	IN	PTR	dfceaef.pp.neo.
-99.51	IN	PTR	JerryXiao.pp.neo.
-185.8	IN	PTR	staph.pp.neo.
-193.8	IN	PTR	JerryXiao.pp.neo.
-193.8	IN	PTR	JerryXiao.pp.neo.
-193.8	IN	PTR	JerryXiao.pp.neo.
-194.8	IN	PTR	JerryXiao-HK1.pp.neo.
-194.8	IN	PTR	JerryXiao-HK1.pp.neo.
-194.8	IN	PTR	JerryXiao-HK1.pp.neo.
-195.8	IN	PTR	JerryXiao-SH1.pp.neo.
-195.8	IN	PTR	JerryXiao-SH1.pp.neo.
-196.8	IN	PTR	JerryXiao-HK2.pp.neo.
-199.11	IN	PTR	SUNNET.pp.neo.
-254.4	IN	PTR	Icecat-Explosion.pp.neo.
+1.10	IN	PTR	LanTian.ptp.neo.
+1.69	IN	PTR	santost12.ptp.neo.
+1.69	IN	PTR	santost12.ptp.neo.
+2.127	IN	PTR	dfceaef.ptp.neo.
+99.51	IN	PTR	JerryXiao.ptp.neo.
+185.8	IN	PTR	staph.ptp.neo.
+193.8	IN	PTR	JerryXiao.ptp.neo.
+193.8	IN	PTR	JerryXiao.ptp.neo.
+193.8	IN	PTR	JerryXiao.ptp.neo.
+194.8	IN	PTR	JerryXiao-HK1.ptp.neo.
+194.8	IN	PTR	JerryXiao-HK1.ptp.neo.
+194.8	IN	PTR	JerryXiao-HK1.ptp.neo.
+195.8	IN	PTR	JerryXiao-SH1.ptp.neo.
+195.8	IN	PTR	JerryXiao-SH1.ptp.neo.
+196.8	IN	PTR	JerryXiao-HK2.ptp.neo.
+199.11	IN	PTR	SUNNET.ptp.neo.
+253.4	IN	PTR	MagicNeko-JP3.ptp.neo.
+254.4	IN	PTR	Icecat-Explosion.ptp.neo.
 
 ; Loopback Addresses
 1.255	IN	PTR	NeoPDP-11.neo
diff --git a/scripts/dns-reverse-generator.sh b/scripts/dns-reverse-generator.sh
index 7f5dd71..c9b2359 100755
--- a/scripts/dns-reverse-generator.sh
+++ b/scripts/dns-reverse-generator.sh
@@ -1,15 +1,14 @@
 #!/usr/bin/env bash
 set -e
 
-IPTOOL="$PWD/Misc/C/ip"
-
 TUN30_TEMP="$(mktemp)"
 PP_TEMP="$(mktemp)"
 LO_TEMP="$(mktemp)"
 
-if [ ! -x "$IPTOOL" ]; then
-	echo "You need to build Misc/C/ip first"
-	exit 1
+if [[ "$(uname)" = *BSD ]]; then
+	TAC=gtac
+else
+	TAC=tac
 fi
 
 print_record()
@@ -17,6 +16,19 @@ print_record()
 	printf "%s\tIN\tPTR\t%s\n" "$1" "$2"
 }
 
+ipcalc()
+{
+	local subnet="$1"
+	local add="$2"
+
+	REV="$(echo -n "${subnet%,*}." | "$TAC" -s .)"
+	REV="${REV%.*.*.}"
+
+	echo "$[ ${REV%.*} + $add ].${REV#*.}"
+}
+
+# PROGRAM BEGIN
+
 sed -i '/AUTOGENERATED/,$d' dns/db.10.127
 echo '; AUTOGENERATED' >> dns/db.10.127
 
@@ -25,8 +37,8 @@ cd route
 for i in *; do
 	source "$i"
 	if [ "$TYPE" = "TUN30" ]; then
-		upstream_ip=$("$IPTOOL" "$i" 1)
-		downstream_ip=$("$IPTOOL" "$i" 2)
+		upstream_ip=$(ipcalc "$i" 1)
+		downstream_ip=$(ipcalc "$i" 2)
 
 		(
 		print_record "$upstream_ip" "$DOWNSTREAM.$UPSTREAM.tun30.neo."
@@ -38,13 +50,13 @@ for i in *; do
 		downstream_ip="${i#*~}"
 
 		(
-		print_record "$("$IPTOOL" "$upstream_ip" 0)" "$UPSTREAM.ptp.neo."
-		print_record "$("$IPTOOL" "$downstream_ip" 0)" "$DOWNSTREAM.ptp.neo."
+		print_record "$(ipcalc "$upstream_ip" 0)" "$UPSTREAM.ptp.neo."
+		print_record "$(ipcalc "$downstream_ip" 0)" "$DOWNSTREAM.ptp.neo."
 		) >> "$PP_TEMP"
 	elif [ "$TYPE" = "LO" ]; then
 		ip="${i/,32/}"
 
-		print_record "$("$IPTOOL" "$ip" 0)" "$NAME.neo" >> "$LO_TEMP"
+		print_record "$(ipcalc "$ip" 0)" "$NAME.neo" >> "$LO_TEMP"
 	fi
 done
 )