diff -uNr qemu-2.12.0/include/net/net.h qemu-2.12.0.mod/include/net/net.h
--- qemu-2.12.0/include/net/net.h	2018-04-24 19:30:47.000000000 +0300
+++ qemu-2.12.0.mod/include/net/net.h	2018-06-25 14:11:33.230632120 +0300
@@ -217,8 +217,8 @@
 int net_hub_id_for_client(NetClientState *nc, int *id);
 NetClientState *net_hub_port_find(int hub_id);
 
-#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
-#define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
+#define DEFAULT_NETWORK_SCRIPT "@TERMUX_PREFIX@/etc/qemu-ifup"
+#define DEFAULT_NETWORK_DOWN_SCRIPT "@TERMUX_PREFIX@/etc/qemu-ifdown"
 #define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper"
 #define DEFAULT_BRIDGE_INTERFACE "br0"