diff --git a/BAN/include/BAN/IPv4.h b/BAN/include/BAN/IPv4.h
new file mode 100644
index 00000000..5ead835b
--- /dev/null
+++ b/BAN/include/BAN/IPv4.h
@@ -0,0 +1,54 @@
+#pragma once
+
+#include <BAN/Formatter.h>
+
+namespace BAN
+{
+
+	struct IPv4Address
+	{
+		IPv4Address(uint32_t u32_address)
+		{
+			address[0] = u32_address >> 24;
+			address[1] = u32_address >> 16;
+			address[2] = u32_address >>  8;
+			address[3] = u32_address >>  0;
+		}
+
+		constexpr uint32_t as_u32()
+		{
+			return
+				((uint32_t)address[0] << 24) |
+				((uint32_t)address[1] << 16) |
+				((uint32_t)address[2] <<  8) |
+				((uint32_t)address[3] <<  0);
+		}
+
+		uint8_t address[4];
+	};
+	static_assert(sizeof(IPv4Address) == 4);
+
+}
+
+namespace BAN::Formatter
+{
+
+	template<typename F>
+	void print_argument(F putc, const IPv4Address& ipv4, const ValueFormat&)
+	{
+		ValueFormat format {
+			.base = 10,
+			.percision = 0,
+			.fill = 0,
+			.upper = false,
+		};
+
+		print_argument(putc, ipv4.address[0], format);
+		for (size_t i = 1; i < 4; i++)
+		{
+			putc('.');
+			print_argument(putc, ipv4.address[i], format);
+		}
+	}
+
+}
diff --git a/BAN/include/BAN/MAC.h b/BAN/include/BAN/MAC.h
new file mode 100644
index 00000000..1fdcc9e6
--- /dev/null
+++ b/BAN/include/BAN/MAC.h
@@ -0,0 +1,36 @@
+#pragma once
+
+#include <BAN/Formatter.h>
+
+namespace BAN
+{
+
+	struct MACAddress
+	{
+		uint8_t address[6];
+	};
+
+}
+
+namespace BAN::Formatter
+{
+
+	template<typename F>
+	void print_argument(F putc, const MACAddress& mac, const ValueFormat&)
+	{
+		ValueFormat format {
+			.base = 16,
+			.percision = 0,
+			.fill = 2,
+			.upper = true,
+		};
+
+		print_argument(putc, mac.address[0], format);
+		for (size_t i = 1; i < 6; i++)
+		{
+			putc(':');
+			print_argument(putc, mac.address[i], format);
+		}
+	}
+
+}