Index: uspace/lib/c/include/net/in.h
===================================================================
--- uspace/lib/c/include/net/in.h	(revision e4554d4cd2ebcf91fb39f3fa98bbd0f229e55fa3)
+++ uspace/lib/c/include/net/in.h	(revision e4554d4cd2ebcf91fb39f3fa98bbd0f229e55fa3)
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2009 Lukas Mejdrech
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libc
+ *  @{
+ */
+
+/** @file
+ *  INET family common definitions.
+ */
+
+#ifndef LIBC_IN_H_
+#define LIBC_IN_H_
+
+#include <net/inet.h>
+#include <net/ip_protocols.h>
+#include <sys/types.h>
+
+/** INET string address maximum length. */
+#define INET_ADDRSTRLEN		(4 * 3 + 3 + 1)
+
+/** Type definition of the INET address.
+ * @see in_addr
+ */
+typedef struct in_addr		in_addr_t;
+
+/** Type definition of the INET socket address.
+ * @see sockaddr_in
+ */
+typedef struct sockaddr_in	sockaddr_in_t;
+
+/** INET address. */
+struct in_addr {
+	/** 4 byte IP address. */
+	uint32_t s_addr;
+};
+
+/** INET socket address.
+ * @see sockaddr
+ */
+struct sockaddr_in {
+	/** Address family. Should be AF_INET. */
+	uint16_t sin_family;
+	/** Port number. */
+	uint16_t sin_port;
+	/** Internet address. */
+	struct in_addr sin_addr;
+	/** Padding to meet the sockaddr size. */
+	uint8_t sin_zero[8];
+};
+
+#endif
+
+/** @}
+ */
Index: uspace/lib/c/include/net/in6.h
===================================================================
--- uspace/lib/c/include/net/in6.h	(revision e4554d4cd2ebcf91fb39f3fa98bbd0f229e55fa3)
+++ uspace/lib/c/include/net/in6.h	(revision e4554d4cd2ebcf91fb39f3fa98bbd0f229e55fa3)
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2009 Lukas Mejdrech
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libc
+ *  @{
+ */
+
+/** @file
+ *  INET6 family common definitions.
+ */
+
+#ifndef LIBC_IN6_H_
+#define LIBC_IN6_H_
+
+#include <net/inet.h>
+#include <net/ip_protocols.h>
+#include <sys/types.h>
+
+/** INET6 string address maximum length. */
+#define INET6_ADDRSTRLEN	(8 * 4 + 7 + 1)
+
+/** Type definition of the INET6 address.
+ * @see in6_addr
+ */
+typedef struct in6_addr	in6_addr_t;
+
+/** Type definition of the INET6 socket address.
+ * @see sockaddr_in6
+ */
+typedef struct sockaddr_in6	sockaddr_in6_t;
+
+/** INET6 address. */
+struct in6_addr {
+	/** 16 byte IPv6 address. */
+	unsigned char s6_addr[16];
+};
+
+/** INET6 socket address.
+ * @see sockaddr
+ */
+struct sockaddr_in6 {
+	/** Address family. Should be AF_INET6. */
+	uint16_t sin6_family;
+	/** Port number. */
+	uint16_t sin6_port;
+	/** IPv6 flow information. */
+	uint32_t sin6_flowinfo;
+	/** IPv6 address. */
+	struct in6_addr sin6_addr;
+	/** Scope identifier. */
+	uint32_t sin6_scope_id;
+};
+
+#endif
+
+/** @}
+ */
Index: uspace/lib/c/include/net/inet.h
===================================================================
--- uspace/lib/c/include/net/inet.h	(revision e4554d4cd2ebcf91fb39f3fa98bbd0f229e55fa3)
+++ uspace/lib/c/include/net/inet.h	(revision e4554d4cd2ebcf91fb39f3fa98bbd0f229e55fa3)
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2009 Lukas Mejdrech
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libc
+ *  @{
+ */
+
+/** @file
+ *  Internet common definitions.
+ */
+
+#ifndef LIBC_INET_H_
+#define LIBC_INET_H_
+
+#include <sys/types.h>
+#include <byteorder.h>
+
+/** Type definition of the socket address.
+ * @see sockaddr
+ */
+typedef struct sockaddr		sockaddr_t;
+
+/** Type definition of the address information.
+ * @see addrinfo
+ */
+typedef struct addrinfo		addrinfo_t;
+
+/** Socket address. */
+struct sockaddr {
+	/** Address family. @see socket.h */
+	uint16_t sa_family;
+	/** 14 byte protocol address. */
+	uint8_t sa_data[14];
+};
+
+extern int inet_ntop(uint16_t, const uint8_t *, char *, size_t);
+extern int inet_pton(uint16_t, const char *, uint8_t *);
+
+#endif
+
+/** @}
+ */
