diff --git a/src/main/core/Module.mk b/src/main/core/Module.mk
index f86102c..6f5364f 100644
--- a/src/main/core/Module.mk
+++ b/src/main/core/Module.mk
@@ -5,6 +5,7 @@ libs_core	:= \
 
 src_core	:= \
     boot.c \
+	config-ext.c \
 	config-property-node.c \
 	log-bt-ext.c \
 	log-bt.c \
diff --git a/src/main/core/config-ext.c b/src/main/core/config-ext.c
new file mode 100644
index 0000000..24ee081
--- /dev/null
+++ b/src/main/core/config-ext.c
@@ -0,0 +1,132 @@
+#include "iface-core/config.h"
+#include "iface-core/log.h"
+
+#include "util/net.h"
+
+void bt_core_config_ext_s8_get(
+    const bt_core_config_t *config, const char *path, int8_t *value)
+{
+    bt_core_config_result_t result;
+
+    result = bt_core_config_s8_get(config, path, value);
+    bt_core_config_fatal_on_error(result);
+}
+
+void bt_core_config_ext_u8_get(
+    const bt_core_config_t *config, const char *path, uint8_t *value)
+{
+    bt_core_config_result_t result;
+
+    result = bt_core_config_u8_get(config, path, value);
+    bt_core_config_fatal_on_error(result);
+}
+
+void bt_core_config_ext_s16_get(
+    const bt_core_config_t *config, const char *path, int16_t *value)
+{
+    bt_core_config_result_t result;
+
+    result = bt_core_config_s16_get(config, path, value);
+    bt_core_config_fatal_on_error(result);
+}
+
+void bt_core_config_ext_u16_get(
+    const bt_core_config_t *config, const char *path, uint16_t *value)
+{
+    bt_core_config_result_t result;
+
+    result = bt_core_config_u16_get(config, path, value);
+    bt_core_config_fatal_on_error(result);
+}
+
+void bt_core_config_ext_s32_get(
+    const bt_core_config_t *config, const char *path, int32_t *value)
+{
+    bt_core_config_result_t result;
+
+    result = bt_core_config_s32_get(config, path, value);
+    bt_core_config_fatal_on_error(result);
+}
+
+void bt_core_config_ext_u32_get(
+    const bt_core_config_t *config, const char *path, uint32_t *value)
+{
+    bt_core_config_result_t result;
+
+    result = bt_core_config_u32_get(config, path, value);
+    bt_core_config_fatal_on_error(result);
+}
+
+void bt_core_config_ext_s64_get(
+    const bt_core_config_t *config, const char *path, int64_t *value)
+{
+    bt_core_config_result_t result;
+
+    result = bt_core_config_s64_get(config, path, value);
+    bt_core_config_fatal_on_error(result);
+}
+
+void bt_core_config_ext_u64_get(
+    const bt_core_config_t *config, const char *path, uint64_t *value)
+{
+    bt_core_config_result_t result;
+
+    result = bt_core_config_u64_get(config, path, value);
+    bt_core_config_fatal_on_error(result);
+}
+
+void bt_core_config_ext_float_get(
+    const bt_core_config_t *config, const char *path, float *value)
+{
+    bt_core_config_result_t result;
+
+    result = bt_core_config_float_get(config, path, value);
+    bt_core_config_fatal_on_error(result);
+}
+
+void bt_core_config_ext_double_get(
+    const bt_core_config_t *config, const char *path, double *value)
+{
+    bt_core_config_result_t result;
+
+    result = bt_core_config_double_get(config, path, value);
+    bt_core_config_fatal_on_error(result);
+}
+
+void bt_core_config_ext_bool_get(
+    const bt_core_config_t *config, const char *path, bool *value)
+{
+    bt_core_config_result_t result;
+
+    result = bt_core_config_bool_get(config, path, value);
+    bt_core_config_fatal_on_error(result);
+}
+
+void bt_core_config_ext_bin_get(
+    const bt_core_config_t *config, const char *path, void *value, size_t len)
+{
+    bt_core_config_result_t result;
+
+    result = bt_core_config_bin_get(config, path, value, len);
+    bt_core_config_fatal_on_error(result);
+}
+
+void bt_core_config_ext_str_get(
+    const bt_core_config_t *config, const char *path, char *value, size_t len)
+{
+    bt_core_config_result_t result;
+
+    result = bt_core_config_str_get(config, path, value, len);
+    bt_core_config_fatal_on_error(result);
+}
+
+void bt_core_config_ext_net_addr_get(const bt_core_config_t *config, const char *path, struct net_addr *addr)
+{
+    char buffer[1024];
+
+    bt_core_config_ext_str_get(config, "server", buffer, sizeof(buffer));
+
+    if (!net_str_parse(buffer, addr)) {
+        log_fatal("Cannot parse server address: %s", buffer);
+    }
+}
\ No newline at end of file
diff --git a/src/main/core/config-ext.h b/src/main/core/config-ext.h
new file mode 100644
index 0000000..09acf46
--- /dev/null
+++ b/src/main/core/config-ext.h
@@ -0,0 +1,36 @@
+#ifndef CORE_CONFIG_EXT_H
+#define CORE_CONFIG_EXT_H
+
+#include "iface-core/config.h"
+
+#include "util/net.h"
+
+void bt_core_config_ext_s8_get(
+    const bt_core_config_t *config, const char *path, int8_t *value);
+void bt_core_config_ext_u8_get(
+    const bt_core_config_t *config, const char *path, uint8_t *value);
+void bt_core_config_ext_s16_get(
+    const bt_core_config_t *config, const char *path, int16_t *value);
+void bt_core_config_ext_u16_get(
+    const bt_core_config_t *config, const char *path, uint16_t *value);
+void bt_core_config_ext_s32_get(
+    const bt_core_config_t *config, const char *path, int32_t *value);
+void bt_core_config_ext_u32_get(
+    const bt_core_config_t *config, const char *path, uint32_t *value);
+void bt_core_config_ext_s64_get(
+    const bt_core_config_t *config, const char *path, int64_t *value);
+void bt_core_config_ext_u64_get(
+    const bt_core_config_t *config, const char *path, uint64_t *value);
+void bt_core_config_ext_float_get(
+    const bt_core_config_t *config, const char *path, float *value);
+void bt_core_config_ext_double_get(
+    const bt_core_config_t *config, const char *path, double *value);
+void bt_core_config_ext_bool_get(
+    const bt_core_config_t *config, const char *path, bool *value);
+void bt_core_config_ext_bin_get(
+    const bt_core_config_t *config, const char *path, void *value, size_t len);
+void bt_core_config_ext_str_get(
+    const bt_core_config_t *config, const char *path, char *value, size_t len);
+void bt_core_config_ext_net_addr_get(const bt_core_config_t *config, const char *path, struct net_addr *addr);
+
+#endif
\ No newline at end of file