1.\" 2.\" Copyright (c) 2013 The DragonFly Project. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in 12.\" the documentation and/or other materials provided with the 13.\" distribution. 14.\" 3. Neither the name of The DragonFly Project nor the names of its 15.\" contributors may be used to endorse or promote products derived 16.\" from this software without specific, prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21.\" FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 22.\" COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23.\" INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 24.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 26.\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 27.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 28.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29.\" SUCH DAMAGE. 30.\" 31.Dd February 7, 2012 32.Dt KETHER_NTOA 9 33.Os 34.Sh NAME 35.Nm kether_ntoa, kether_aton 36.Nd ethernet address conversion routines 37.Sh SYNOPSIS 38.In net/if_var.h 39.Ft char * 40.Fn kether_ntoa "const u_char *addr" "char *buf" 41.Ft u_char * 42.Fn kether_aton "const char *macstr" "u_char *addr" 43.Sh DESCRIPTION 44The 45.Fn kether_ntoa 46function converts the ethernet address specified in 47.Fa addr 48to its corresponding hexadecimal ASCII representation. 49Likewise, the 50.Fn kether_aton 51function converts an ASCII 52string specified in 53.Fa macstr 54to an ethernet address. 55.Pp 56.Fn kether_ntoa 57serves a similar purpose as the former, non-standard 58.Cm D 59conversion of 60.Xr kprintf 9 61(as in, 62.Dq %6D ) 63which some 64.Bx Ns s 65still have. 66.Pp 67Notational conventions for hexadecimal ASCII 68representation of a MAC 69address are specified in IEEE 802. 70.Sh RETURN VALUES 71The 72.Fn kether_ntoa 73function returns a pointer to the string containing the hexadecimal ASCII 74representation of the ethernet address passed in 75.Fa addr , 76or NULL in the case of failure. 77.Pp 78The 79.Fn kether_aton 80function returns a pointer to a block of bytes containing the conversion 81of the specified ASCII 82string in 83.Fa macstr , 84or NULL in the case of failure. 85.Sh SEE ALSO 86.Xr ascii 7 , 87.Xr hexdump 9 , 88.Xr hexncpy 9 89.Sh HISTORY 90The 91.Fn kether_ntoa 92and 93.Fn kether_aton 94functions first appeared in 95.Dx 3.3 . 96