diff --git a/cc3200/application.mk b/cc3200/application.mk
index 48db12b2aa..f3ed40a72b 100644
--- a/cc3200/application.mk
+++ b/cc3200/application.mk
@@ -20,6 +20,7 @@ APP_INC += -I$(BUILD)
 APP_INC += -I$(BUILD)/genhdr
 APP_INC += -I../lib/fatfs
 APP_INC += -I../lib/mp-readline
+APP_INC += -I../lib/netutils
 APP_INC += -I../stmhal
 
 APP_CPPDEFINES = -Dgcc -DTARGET_IS_CC3200 -DSL_FULL -DUSE_FREERTOS
@@ -142,6 +143,7 @@ APP_LIB_SRC_C = $(addprefix lib/,\
 	fatfs/option/ccsbcs.c \
 	libc/string0.c \
 	mp-readline/readline.c \
+	netutils/netutils.c \
 	)
 	
 APP_STM_SRC_C = $(addprefix stmhal/,\
diff --git a/cc3200/mods/modnetwork.c b/cc3200/mods/modnetwork.c
index b63cb484dc..f9536ccb5e 100644
--- a/cc3200/mods/modnetwork.c
+++ b/cc3200/mods/modnetwork.c
@@ -114,60 +114,3 @@ const mp_obj_module_t mp_module_network = {
     .name = MP_QSTR_network,
     .globals = (mp_obj_dict_t*)&mp_module_network_globals,
 };
-
-/******************************************************************************/
-// Miscellaneous helpers
-
-// Takes an address of the form '192.168.0.1' and converts it to integer
-// in out_ip (little endian, so the 192 is the last byte).
-void mod_network_parse_ipv4_addr(mp_obj_t addr_in, uint8_t *out_ip) {
-    mp_uint_t addr_len;
-    const char *addr_str = mp_obj_str_get_data(addr_in, &addr_len);
-    if (addr_len == 0) {
-        // special case of no address given
-        memset(out_ip, 0, MOD_NETWORK_IPV4ADDR_BUF_SIZE);
-        return;
-    }
-    const char *s = addr_str;
-    const char *s_top = addr_str + addr_len;
-    for (mp_uint_t i = 3 ; ; i--) {
-        mp_uint_t val = 0;
-        for (; s < s_top && *s != '.'; s++) {
-            val = val * 10 + *s - '0';
-        }
-        out_ip[i] = val;
-        if (i == 0 && s == s_top) {
-            return;
-        } else if (i > 0 && s < s_top && *s == '.') {
-            s++;
-        } else {
-            nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
-        }
-    }
-}
-
-// Takes an address of the form ('192.168.0.1', 8080), returns the port and
-// puts IP in out_ip (which must take at least IPADDR_BUF_SIZE bytes).
-mp_uint_t mod_network_parse_inet_addr(mp_obj_t addr_in, uint8_t *out_ip) {
-    mp_obj_t *addr_items;
-    mp_obj_get_array_fixed_n(addr_in, 2, &addr_items);
-    mod_network_parse_ipv4_addr(addr_items[0], out_ip);
-    return mp_obj_get_int(addr_items[1]);
-}
-
-// Takes an array with a raw IPv4 address and returns something like '192.168.0.1'.
-mp_obj_t mod_network_format_ipv4_addr(uint8_t *ip) {
-    char ip_str[16];
-    mp_uint_t ip_len = snprintf(ip_str, 16, "%u.%u.%u.%u", ip[3], ip[2], ip[1], ip[0]);
-    return mp_obj_new_str(ip_str, ip_len, false);
-}
-
-// Takes an array with a raw IP address, and a port, and returns a net-address
-// tuple such as ('192.168.0.1', 8080).
-mp_obj_t mod_network_format_inet_addr(uint8_t *ip, mp_uint_t port) {
-    mp_obj_t tuple[2] = {
-        tuple[0] = mod_network_format_ipv4_addr(ip),
-        tuple[1] = mp_obj_new_int(port),
-    };
-    return mp_obj_new_tuple(2, tuple);
-}
diff --git a/cc3200/mods/modnetwork.h b/cc3200/mods/modnetwork.h
index a8f6facf41..1b7811c93f 100644
--- a/cc3200/mods/modnetwork.h
+++ b/cc3200/mods/modnetwork.h
@@ -77,9 +77,4 @@ void mod_network_init0(void);
 void mod_network_register_nic(mp_obj_t nic);
 mp_obj_t mod_network_find_nic(void);
 
-void mod_network_parse_ipv4_addr(mp_obj_t addr_in, uint8_t *out_ip);
-mp_uint_t mod_network_parse_inet_addr(mp_obj_t addr_in, uint8_t *out_ip);
-mp_obj_t mod_network_format_ipv4_addr(uint8_t *ip);
-mp_obj_t mod_network_format_inet_addr(uint8_t *ip, mp_uint_t port);
-
 #endif  // MODNETWORK_H_
diff --git a/cc3200/mods/modusocket.c b/cc3200/mods/modusocket.c
index d3e596b03b..f74f2673dd 100644
--- a/cc3200/mods/modusocket.c
+++ b/cc3200/mods/modusocket.c
@@ -32,6 +32,7 @@
 #include "py/mpstate.h"
 #include MICROPY_HAL_H
 #include "py/runtime.h"
+#include "netutils.h"
 #include "modnetwork.h"
 #include "mpexception.h"
 
@@ -99,7 +100,7 @@ STATIC mp_obj_t socket_bind(mp_obj_t self_in, mp_obj_t addr_in) {
 
     // get address
     uint8_t ip[MOD_NETWORK_IPV4ADDR_BUF_SIZE];
-    mp_uint_t port = mod_network_parse_inet_addr(addr_in, ip);
+    mp_uint_t port = netutils_parse_inet_addr(addr_in, ip, NETUTILS_LITTLE);
 
     // call the NIC to bind the socket
     int _errno;
@@ -155,7 +156,7 @@ STATIC mp_obj_t socket_accept(mp_obj_t self_in) {
     // make the return value
     mp_obj_tuple_t *client = mp_obj_new_tuple(2, NULL);
     client->items[0] = socket2;
-    client->items[1] = mod_network_format_inet_addr(ip, port);
+    client->items[1] = netutils_format_inet_addr(ip, port, NETUTILS_LITTLE);
 
     return client;
 }
@@ -167,7 +168,7 @@ STATIC mp_obj_t socket_connect(mp_obj_t self_in, mp_obj_t addr_in) {
 
     // get address
     uint8_t ip[MOD_NETWORK_IPV4ADDR_BUF_SIZE];
-    mp_uint_t port = mod_network_parse_inet_addr(addr_in, ip);
+    mp_uint_t port = netutils_parse_inet_addr(addr_in, ip, NETUTILS_LITTLE);
 
     // call the NIC to connect the socket
     int _errno;
@@ -231,7 +232,7 @@ STATIC mp_obj_t socket_sendto(mp_obj_t self_in, mp_obj_t data_in, mp_obj_t addr_
 
     // get address
     uint8_t ip[MOD_NETWORK_IPV4ADDR_BUF_SIZE];
-    mp_uint_t port = mod_network_parse_inet_addr(addr_in, ip);
+    mp_uint_t port = netutils_parse_inet_addr(addr_in, ip, NETUTILS_LITTLE);
 
     // call the NIC to sendto
     int _errno;
@@ -268,7 +269,7 @@ STATIC mp_obj_t socket_recvfrom(mp_obj_t self_in, mp_obj_t len_in) {
         vstr.buf[vstr.len] = '\0';
         tuple[0] = mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
     }
-    tuple[1] = mod_network_format_inet_addr(ip, port);
+    tuple[1] = netutils_format_inet_addr(ip, port, NETUTILS_LITTLE);
     return mp_obj_new_tuple(2, tuple);
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_recvfrom_obj, socket_recvfrom);
@@ -399,7 +400,7 @@ STATIC mp_obj_t mod_usocket_getaddrinfo(mp_obj_t host_in, mp_obj_t port_in) {
             tuple->items[1] = MP_OBJ_NEW_SMALL_INT(SOCK_STREAM);
             tuple->items[2] = MP_OBJ_NEW_SMALL_INT(0);
             tuple->items[3] = MP_OBJ_NEW_QSTR(MP_QSTR_);
-            tuple->items[4] = mod_network_format_inet_addr(out_ip, port);
+            tuple->items[4] = netutils_format_inet_addr(out_ip, port, NETUTILS_LITTLE);
             return mp_obj_new_list(1, (mp_obj_t*)&tuple);
         }
     }
diff --git a/cc3200/mods/modwlan.c b/cc3200/mods/modwlan.c
index f5935bf825..e2fbdf5031 100644
--- a/cc3200/mods/modwlan.c
+++ b/cc3200/mods/modwlan.c
@@ -34,6 +34,7 @@
 #include "py/obj.h"
 #include "py/objstr.h"
 #include "py/runtime.h"
+#include "netutils.h"
 #include "modnetwork.h"
 #include "modwlan.h"
 #include "pybioctl.h"
@@ -836,10 +837,10 @@ STATIC mp_obj_t wlan_ifconfig (mp_obj_t self_in) {
     ifconfig[1] = mp_obj_new_str((const char *)wlan_obj.ssid, strlen((const char *)wlan_obj.ssid), false);
     ifconfig[2] = mp_obj_new_bytes((const byte *)wlan_obj.bssid, SL_BSSID_LENGTH);
     ifconfig[3] = mp_obj_new_bytes((const byte *)wlan_obj.mac, SL_BSSID_LENGTH);
-    ifconfig[4] = mod_network_format_ipv4_addr((uint8_t *)&wlan_obj.ip);
-    ifconfig[5] = mod_network_format_ipv4_addr((uint8_t *)&ipV4.ipV4Mask);
-    ifconfig[6] = mod_network_format_ipv4_addr((uint8_t *)&wlan_obj.gateway);
-    ifconfig[7] = mod_network_format_ipv4_addr((uint8_t *)&wlan_obj.dns);
+    ifconfig[4] = netutils_format_ipv4_addr((uint8_t *)&wlan_obj.ip, NETUTILS_LITTLE);
+    ifconfig[5] = netutils_format_ipv4_addr((uint8_t *)&ipV4.ipV4Mask, NETUTILS_LITTLE);
+    ifconfig[6] = netutils_format_ipv4_addr((uint8_t *)&wlan_obj.gateway, NETUTILS_LITTLE);
+    ifconfig[7] = netutils_format_ipv4_addr((uint8_t *)&wlan_obj.dns, NETUTILS_LITTLE);
 
     return mp_obj_new_attrtuple(wlan_ifconfig_fields, 8, ifconfig);
 }
@@ -992,10 +993,10 @@ STATIC mp_obj_t wlan_config_ip (mp_uint_t n_args, const mp_obj_t *pos_args, mp_m
         }
 
         SlNetCfgIpV4Args_t ipV4;
-        mod_network_parse_ipv4_addr(args[1].u_obj, (uint8_t *)&ipV4.ipV4);
-        mod_network_parse_ipv4_addr(args[2].u_obj, (uint8_t *)&ipV4.ipV4Mask);
-        mod_network_parse_ipv4_addr(args[3].u_obj, (uint8_t *)&ipV4.ipV4Gateway);
-        mod_network_parse_ipv4_addr(args[4].u_obj, (uint8_t *)&ipV4.ipV4DnsServer);
+        netutils_parse_ipv4_addr(args[1].u_obj, (uint8_t *)&ipV4.ipV4, NETUTILS_LITTLE);
+        netutils_parse_ipv4_addr(args[2].u_obj, (uint8_t *)&ipV4.ipV4Mask, NETUTILS_LITTLE);
+        netutils_parse_ipv4_addr(args[3].u_obj, (uint8_t *)&ipV4.ipV4Gateway, NETUTILS_LITTLE);
+        netutils_parse_ipv4_addr(args[4].u_obj, (uint8_t *)&ipV4.ipV4DnsServer, NETUTILS_LITTLE);
 
         wlan_servers_stop();
 
diff --git a/lib/netutils/netutils.c b/lib/netutils/netutils.c
new file mode 100644
index 0000000000..ac4ebfa2b7
--- /dev/null
+++ b/lib/netutils/netutils.c
@@ -0,0 +1,95 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2013, 2014 Damien P. George
+ * Copyright (c) 2015 Daniel Campora
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "py/obj.h"
+#include "py/nlr.h"
+#include "netutils.h"
+
+// Takes an array with a raw IPv4 address and returns something like '192.168.0.1'.
+mp_obj_t netutils_format_ipv4_addr(uint8_t *ip, netutils_endian_t endian) {
+    char ip_str[16];
+    mp_uint_t ip_len;
+    if (endian == NETUTILS_LITTLE) {
+        ip_len = snprintf(ip_str, 16, "%u.%u.%u.%u", ip[3], ip[2], ip[1], ip[0]);
+    } else {
+        ip_len = snprintf(ip_str, 16, "%u.%u.%u.%u", ip[0], ip[1], ip[2], ip[3]);
+    }
+    return mp_obj_new_str(ip_str, ip_len, false);
+}
+
+// Takes an array with a raw IP address, and a port, and returns a net-address
+// tuple such as ('192.168.0.1', 8080).
+mp_obj_t netutils_format_inet_addr(uint8_t *ip, mp_uint_t port, netutils_endian_t endian) {
+    mp_obj_t tuple[2] = {
+        tuple[0] = netutils_format_ipv4_addr(ip, endian),
+        tuple[1] = mp_obj_new_int(port),
+    };
+    return mp_obj_new_tuple(2, tuple);
+}
+
+void netutils_parse_ipv4_addr(mp_obj_t addr_in, uint8_t *out_ip, netutils_endian_t endian) {
+    mp_uint_t addr_len;
+    const char *addr_str = mp_obj_str_get_data(addr_in, &addr_len);
+    if (addr_len == 0) {
+        // special case of no address given
+        memset(out_ip, 0, NETUTILS_IPV4ADDR_BUFSIZE);
+        return;
+    }
+    const char *s = addr_str;
+    const char *s_top = addr_str + addr_len;
+    for (mp_uint_t i = 3 ; ; i--) {
+        mp_uint_t val = 0;
+        for (; s < s_top && *s != '.'; s++) {
+            val = val * 10 + *s - '0';
+        }
+        if (endian == NETUTILS_LITTLE) {
+            out_ip[i] = val;
+        } else {
+            out_ip[NETUTILS_IPV4ADDR_BUFSIZE - 1 - i] = val;
+        }
+        if (i == 0 && s == s_top) {
+            return;
+        } else if (i > 0 && s < s_top && *s == '.') {
+            s++;
+        } else {
+            nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "invalid arguments"));
+        }
+    }
+}
+
+// Takes an address of the form ('192.168.0.1', 8080), returns the port and
+// puts IP in out_ip (which must take at least IPADDR_BUF_SIZE bytes).
+mp_uint_t netutils_parse_inet_addr(mp_obj_t addr_in, uint8_t *out_ip, netutils_endian_t endian) {
+    mp_obj_t *addr_items;
+    mp_obj_get_array_fixed_n(addr_in, 2, &addr_items);
+    netutils_parse_ipv4_addr(addr_items[0], out_ip, endian);
+    return mp_obj_get_int(addr_items[1]);
+}
diff --git a/lib/netutils/netutils.h b/lib/netutils/netutils.h
new file mode 100644
index 0000000000..45e0216402
--- /dev/null
+++ b/lib/netutils/netutils.h
@@ -0,0 +1,50 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2013, 2014 Damien P. George
+ * Copyright (c) 2015 Daniel Campora
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef __MICROPY_INCLUDED_LIB_NETUTILS_H__
+#define __MICROPY_INCLUDED_LIB_NETUTILS_H__
+
+#define NETUTILS_IPV4ADDR_BUFSIZE    4
+
+typedef enum _netutils_endian_t {
+    NETUTILS_LITTLE,
+    NETUTILS_BIG,
+} netutils_endian_t;
+
+// Takes an array with a raw IPv4 address and returns something like '192.168.0.1'.
+mp_obj_t netutils_format_ipv4_addr(uint8_t *ip, netutils_endian_t endian);
+
+// Takes an array with a raw IP address, and a port, and returns a net-address
+// tuple such as ('192.168.0.1', 8080).
+mp_obj_t netutils_format_inet_addr(uint8_t *ip, mp_uint_t port, netutils_endian_t endian);
+
+void netutils_parse_ipv4_addr(mp_obj_t addr_in, uint8_t *out_ip, netutils_endian_t endian);
+
+// Takes an address of the form ('192.168.0.1', 8080), returns the port and
+// puts IP in out_ip (which must take at least IPADDR_BUF_SIZE bytes).
+mp_uint_t netutils_parse_inet_addr(mp_obj_t addr_in, uint8_t *out_ip, netutils_endian_t endian);
+
+#endif // __MICROPY_INCLUDED_LIB_NETUTILS_H__
diff --git a/stmhal/Makefile b/stmhal/Makefile
index 78553f188b..60f05669b2 100644
--- a/stmhal/Makefile
+++ b/stmhal/Makefile
@@ -41,6 +41,7 @@ INC += -I$(HAL_DIR)/inc
 INC += -I$(USBDEV_DIR)/core/inc -I$(USBDEV_DIR)/class/inc
 #INC += -I$(USBHOST_DIR)
 INC += -I../lib/mp-readline
+INC += -I../lib/netutils
 
 CFLAGS_CORTEX_M4 = -mthumb -mtune=cortex-m4 -mabi=aapcs-linux -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -fsingle-precision-constant -Wdouble-promotion
 CFLAGS = $(INC) -Wall -Wpointer-arith -Werror -ansi -std=gnu99 -nostdlib $(CFLAGS_MOD) $(CFLAGS_CORTEX_M4) $(COPT)
@@ -92,6 +93,7 @@ SRC_LIB = $(addprefix lib/,\
 	fatfs/ff.c \
 	fatfs/option/ccsbcs.c \
 	mp-readline/readline.c \
+	netutils/netutils.c \
 	)
 
 SRC_C = \
diff --git a/stmhal/modnetwork.c b/stmhal/modnetwork.c
index 4163783e2c..86bf7379bb 100644
--- a/stmhal/modnetwork.c
+++ b/stmhal/modnetwork.c
@@ -90,65 +90,3 @@ const mp_obj_module_t mp_module_network = {
     .name = MP_QSTR_network,
     .globals = (mp_obj_dict_t*)&mp_module_network_globals,
 };
-
-/******************************************************************************/
-// Miscellaneous helpers
-
-void mod_network_convert_ipv4_endianness(uint8_t *ip) {
-    uint8_t ip0 = ip[0]; ip[0] = ip[3]; ip[3] = ip0;
-    uint8_t ip1 = ip[1]; ip[1] = ip[2]; ip[2] = ip1;
-}
-
-// Takes an address of the form '192.168.0.1' and converts it to network format
-// in out_ip (big endian, so the 192 is the first byte).
-void mod_network_parse_ipv4_addr(mp_obj_t addr_in, uint8_t *out_ip) {
-    mp_uint_t addr_len;
-    const char *addr_str = mp_obj_str_get_data(addr_in, &addr_len);
-    if (addr_len == 0) {
-        // special case of no address given
-        memset(out_ip, 0, MOD_NETWORK_IPADDR_BUF_SIZE);
-        return;
-    }
-    const char *s = addr_str;
-    const char *s_top = addr_str + addr_len;
-    for (mp_uint_t i = 0;; i++) {
-        mp_uint_t val = 0;
-        for (; s < s_top && *s != '.'; s++) {
-            val = val * 10 + *s - '0';
-        }
-        out_ip[i] = val;
-        if (i == 3 && s == s_top) {
-            return;
-        } else if (i < 3 && s < s_top && *s == '.') {
-            s++;
-        } else {
-            nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "invalid IP address"));
-        }
-    }
-}
-
-// Takes an address of the form ('192.168.0.1', 8080), returns the port and
-// puts IP in out_ip (which must take at least IPADDR_BUF_SIZE bytes).
-mp_uint_t mod_network_parse_inet_addr(mp_obj_t addr_in, uint8_t *out_ip) {
-    mp_obj_t *addr_items;
-    mp_obj_get_array_fixed_n(addr_in, 2, &addr_items);
-    mod_network_parse_ipv4_addr(addr_items[0], out_ip);
-    return mp_obj_get_int(addr_items[1]);
-}
-
-// Takes an array with a raw IPv4 address and returns something like '192.168.0.1'.
-mp_obj_t mod_network_format_ipv4_addr(uint8_t *ip) {
-    char ip_str[16];
-    mp_uint_t ip_len = snprintf(ip_str, 16, "%u.%u.%u.%u", ip[0], ip[1], ip[2], ip[3]);
-    return mp_obj_new_str(ip_str, ip_len, false);
-}
-
-// Takes an array with a raw IP address, and a port, and returns a net-address
-// tuple such as ('192.168.0.1', 8080).
-mp_obj_t mod_network_format_inet_addr(uint8_t *ip, mp_uint_t port) {
-    mp_obj_t tuple[2] = {
-        tuple[0] = mod_network_format_ipv4_addr(ip),
-        tuple[1] = mp_obj_new_int(port),
-    };
-    return mp_obj_new_tuple(2, tuple);
-}
diff --git a/stmhal/modnetwork.h b/stmhal/modnetwork.h
index f306f877a5..d3bc5674de 100644
--- a/stmhal/modnetwork.h
+++ b/stmhal/modnetwork.h
@@ -77,9 +77,3 @@ extern const mod_network_nic_type_t mod_network_nic_type_cc3k;
 void mod_network_init(void);
 void mod_network_register_nic(mp_obj_t nic);
 mp_obj_t mod_network_find_nic(const uint8_t *ip);
-
-void mod_network_convert_ipv4_endianness(uint8_t *ip);
-void mod_network_parse_ipv4_addr(mp_obj_t addr_in, uint8_t *out_ip);
-mp_uint_t mod_network_parse_inet_addr(mp_obj_t addr_in, uint8_t *out_ip);
-mp_obj_t mod_network_format_ipv4_addr(uint8_t *ip);
-mp_obj_t mod_network_format_inet_addr(uint8_t *ip, mp_uint_t port);
diff --git a/stmhal/modnwcc3k.c b/stmhal/modnwcc3k.c
index 5236c3bdc1..7dd5fb2cdf 100644
--- a/stmhal/modnwcc3k.c
+++ b/stmhal/modnwcc3k.c
@@ -36,6 +36,7 @@
 #include "py/objlist.h"
 #include "py/stream.h"
 #include "py/runtime.h"
+#include "netutils.h"
 #include "modnetwork.h"
 #include "pin.h"
 #include "genhdr/pins.h"
@@ -519,13 +520,6 @@ STATIC mp_obj_t cc3k_ifconfig(mp_obj_t self_in) {
     tNetappIpconfigRetArgs ipconfig;
     netapp_ipconfig(&ipconfig);
 
-    // CC3000 returns little endian, but we want big endian
-    mod_network_convert_ipv4_endianness(ipconfig.aucIP);
-    mod_network_convert_ipv4_endianness(ipconfig.aucSubnetMask);
-    mod_network_convert_ipv4_endianness(ipconfig.aucDefaultGateway);
-    mod_network_convert_ipv4_endianness(ipconfig.aucDNSServer);
-    mod_network_convert_ipv4_endianness(ipconfig.aucDHCPServer);
-
     // render MAC address
     VSTR_FIXED(mac_vstr, 18);
     const uint8_t *mac = ipconfig.uaMacAddr;
@@ -533,11 +527,11 @@ STATIC mp_obj_t cc3k_ifconfig(mp_obj_t self_in) {
 
     // create and return tuple with ifconfig info
     mp_obj_t tuple[7] = {
-        mod_network_format_ipv4_addr(ipconfig.aucIP),
-        mod_network_format_ipv4_addr(ipconfig.aucSubnetMask),
-        mod_network_format_ipv4_addr(ipconfig.aucDefaultGateway),
-        mod_network_format_ipv4_addr(ipconfig.aucDNSServer),
-        mod_network_format_ipv4_addr(ipconfig.aucDHCPServer),
+        netutils_format_ipv4_addr(ipconfig.aucIP, NETUTILS_LITTLE),
+        netutils_format_ipv4_addr(ipconfig.aucSubnetMask, NETUTILS_LITTLE),
+        netutils_format_ipv4_addr(ipconfig.aucDefaultGateway, NETUTILS_LITTLE),
+        netutils_format_ipv4_addr(ipconfig.aucDNSServer, NETUTILS_LITTLE),
+        netutils_format_ipv4_addr(ipconfig.aucDHCPServer, NETUTILS_LITTLE),
         mp_obj_new_str(mac_vstr.buf, mac_vstr.len, false),
         mp_obj_new_str((const char*)ipconfig.uaSSID, strlen((const char*)ipconfig.uaSSID), false),
     };
diff --git a/stmhal/modnwwiznet5k.c b/stmhal/modnwwiznet5k.c
index 896c4402d8..48d9be170c 100644
--- a/stmhal/modnwwiznet5k.c
+++ b/stmhal/modnwwiznet5k.c
@@ -32,6 +32,7 @@
 #include "py/nlr.h"
 #include "py/objlist.h"
 #include "py/runtime.h"
+#include "netutils.h"
 #include "modnetwork.h"
 #include "pin.h"
 #include "genhdr/pins.h"
@@ -422,20 +423,20 @@ STATIC mp_obj_t wiznet5k_ifconfig(mp_uint_t n_args, const mp_obj_t *args) {
     if (n_args == 1) {
         // get
         mp_obj_t tuple[4] = {
-            mod_network_format_ipv4_addr(netinfo.ip),
-            mod_network_format_ipv4_addr(netinfo.sn),
-            mod_network_format_ipv4_addr(netinfo.gw),
-            mod_network_format_ipv4_addr(netinfo.dns),
+            netutils_format_ipv4_addr(netinfo.ip, NETUTILS_BIG),
+            netutils_format_ipv4_addr(netinfo.sn, NETUTILS_BIG),
+            netutils_format_ipv4_addr(netinfo.gw, NETUTILS_BIG),
+            netutils_format_ipv4_addr(netinfo.dns, NETUTILS_BIG),
         };
         return mp_obj_new_tuple(4, tuple);
     } else {
         // set
         mp_obj_t *items;
         mp_obj_get_array_fixed_n(args[1], 4, &items);
-        mod_network_parse_ipv4_addr(items[0], netinfo.ip);
-        mod_network_parse_ipv4_addr(items[1], netinfo.sn);
-        mod_network_parse_ipv4_addr(items[2], netinfo.gw);
-        mod_network_parse_ipv4_addr(items[3], netinfo.dns);
+        netutils_parse_ipv4_addr(items[0], netinfo.ip, NETUTILS_BIG);
+        netutils_parse_ipv4_addr(items[1], netinfo.sn, NETUTILS_BIG);
+        netutils_parse_ipv4_addr(items[2], netinfo.gw, NETUTILS_BIG);
+        netutils_parse_ipv4_addr(items[3], netinfo.dns, NETUTILS_BIG);
         ctlnetwork(CN_SET_NETINFO, &netinfo);
         return mp_const_none;
     }
diff --git a/stmhal/modusocket.c b/stmhal/modusocket.c
index a2ec08f59e..4ef614e4ca 100644
--- a/stmhal/modusocket.c
+++ b/stmhal/modusocket.c
@@ -32,6 +32,7 @@
 #include "py/objtuple.h"
 #include "py/objlist.h"
 #include "py/runtime.h"
+#include "netutils.h"
 #include "modnetwork.h"
 
 /******************************************************************************/
@@ -93,7 +94,7 @@ STATIC mp_obj_t socket_bind(mp_obj_t self_in, mp_obj_t addr_in) {
 
     // get address
     uint8_t ip[MOD_NETWORK_IPADDR_BUF_SIZE];
-    mp_uint_t port = mod_network_parse_inet_addr(addr_in, ip);
+    mp_uint_t port = netutils_parse_inet_addr(addr_in, ip, NETUTILS_BIG);
 
     // check if we need to select a NIC
     socket_select_nic(self, ip);
@@ -153,7 +154,7 @@ STATIC mp_obj_t socket_accept(mp_obj_t self_in) {
     // make the return value
     mp_obj_tuple_t *client = mp_obj_new_tuple(2, NULL);
     client->items[0] = socket2;
-    client->items[1] = mod_network_format_inet_addr(ip, port);
+    client->items[1] = netutils_format_inet_addr(ip, port, NETUTILS_BIG);
 
     return client;
 }
@@ -165,7 +166,7 @@ STATIC mp_obj_t socket_connect(mp_obj_t self_in, mp_obj_t addr_in) {
 
     // get address
     uint8_t ip[MOD_NETWORK_IPADDR_BUF_SIZE];
-    mp_uint_t port = mod_network_parse_inet_addr(addr_in, ip);
+    mp_uint_t port = netutils_parse_inet_addr(addr_in, ip, NETUTILS_BIG);
 
     // check if we need to select a NIC
     socket_select_nic(self, ip);
@@ -231,7 +232,7 @@ STATIC mp_obj_t socket_sendto(mp_obj_t self_in, mp_obj_t data_in, mp_obj_t addr_
 
     // get address
     uint8_t ip[MOD_NETWORK_IPADDR_BUF_SIZE];
-    mp_uint_t port = mod_network_parse_inet_addr(addr_in, ip);
+    mp_uint_t port = netutils_parse_inet_addr(addr_in, ip, NETUTILS_BIG);
 
     // check if we need to select a NIC
     socket_select_nic(self, ip);
@@ -270,7 +271,7 @@ STATIC mp_obj_t socket_recvfrom(mp_obj_t self_in, mp_obj_t len_in) {
         vstr.len = ret;
         tuple[0] = mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
     }
-    tuple[1] = mod_network_format_inet_addr(ip, port);
+    tuple[1] = netutils_format_inet_addr(ip, port, NETUTILS_BIG);
     return mp_obj_new_tuple(2, tuple);
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_recvfrom_obj, socket_recvfrom);
@@ -404,7 +405,7 @@ STATIC mp_obj_t mod_usocket_getaddrinfo(mp_obj_t host_in, mp_obj_t port_in) {
             tuple->items[1] = MP_OBJ_NEW_SMALL_INT(MOD_NETWORK_SOCK_STREAM);
             tuple->items[2] = MP_OBJ_NEW_SMALL_INT(0);
             tuple->items[3] = MP_OBJ_NEW_QSTR(MP_QSTR_);
-            tuple->items[4] = mod_network_format_inet_addr(out_ip, port);
+            tuple->items[4] = netutils_format_inet_addr(out_ip, port, NETUTILS_BIG);
             return mp_obj_new_list(1, (mp_obj_t*)&tuple);
         }
     }