diff --git a/gateway/00_env.sh b/gateway/00_env.sh
index de686f1..85238f3 100755
--- a/gateway/00_env.sh
+++ b/gateway/00_env.sh
@@ -4,6 +4,8 @@ WAN_IF="eno1"
 LAN_IF="enx00e04c6800ae"
 LAN_NET="192.168.2.0/24"
 LAN_GW="192.168.2.1"
+LAN_IP_START="192.168.2.60"
+LAN_IP_END="192.168.2.220
 
 SOCKS5_SERVER="127.0.0.1"
 SOCKS5_PORT="1080"
diff --git a/gateway/10_dhcp_dns.sh b/gateway/10_dhcp_dns.sh
index c5f2657..56ce411 100755
--- a/gateway/10_dhcp_dns.sh
+++ b/gateway/10_dhcp_dns.sh
@@ -10,7 +10,7 @@ apt install -y dnsmasq ipset curl || true
 cat >/etc/dnsmasq.d/lan.conf <<EOL
 interface=$LAN_IF
 bind-interfaces
-dhcp-range=192.168.2.100,192.168.2.200,12h
+dhcp-range=${LAN_IP_START},${LAN_IP_END},12h
 dhcp-option=3,$LAN_GW
 dhcp-option=6,$LAN_GW
 server=$FOREIGN_DNS1