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 , 36.Nm kether_aton 37.Nd ethernet address conversion routines 38.Sh SYNOPSIS 39.In net/if_var.h 40.Ft char * 41.Fn kether_ntoa "const u_char *addr" "char *buf" 42.Ft u_char * 43.Fn kether_aton "const char *macstr" "u_char *addr" 44.Sh DESCRIPTION 45The 46.Fn kether_ntoa 47function converts the ethernet address specified in 48.Fa addr 49to its corresponding hexadecimal ASCII representation. 50Likewise, the 51.Fn kether_aton 52function converts an ASCII 53string specified in 54.Fa macstr 55to an ethernet address. 56.Pp 57.Fn kether_ntoa 58serves a similar purpose as the former, non-standard 59.Cm D 60conversion of 61.Xr kprintf 9 62(as in, 63.Dq %6D ) 64which some 65.Bx Ns s 66still have. 67.Pp 68Notational conventions for hexadecimal ASCII 69representation of a MAC 70address are specified in IEEE 802. 71.Sh RETURN VALUES 72The 73.Fn kether_ntoa 74function returns a pointer to the string containing the hexadecimal ASCII 75representation of the ethernet address passed in 76.Fa addr , 77or NULL in the case of failure. 78.Pp 79The 80.Fn kether_aton 81function returns a pointer to a block of bytes containing the conversion 82of the specified ASCII 83string in 84.Fa macstr , 85or NULL in the case of failure. 86.Sh SEE ALSO 87.Xr ascii 7 , 88.Xr hexdump 9 , 89.Xr hexncpy 9 90.Sh HISTORY 91The 92.Fn kether_ntoa 93and 94.Fn kether_aton 95functions first appeared in 96.Dx 3.3 . 97