<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div><div style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.296875); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); ">Geordie,</div><div style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.296875); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); "><br></div><div style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.296875); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); ">You are after a locally administered address</div><div style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.296875); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); "><br></div><div style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.296875); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); "><span style="font-family: '.HelveticaNeueUI'; font-size: 15px; line-height: 19px; white-space: nowrap; -webkit-text-size-adjust: none; "><a href="http://en.wikipedia.org/wiki/MAC_address">http://en.wikipedia.org/wiki/MAC_address</a></span></div><div style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.296875); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); -webkit-text-size-adjust: none; "><font face=".HelveticaNeueUI"><span style="font-size: 15px; line-height: 19px; white-space: nowrap; "><br></span></font></div><div style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.296875); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); -webkit-text-size-adjust: none; "><font face=".HelveticaNeueUI"><span style="font-size: 15px; line-height: 19px; white-space: nowrap; ">MAC's starting with 4000 are locally administered.</span></font></div><div><font face=".HelveticaNeueUI"><span style="font-size: 15px; line-height: 19px; white-space: nowrap; "><br></span></font></div><br></div><div>Keith </div><div><br>On 23/02/2013, at 8:06 PM, Lloyd Wood <<a href="mailto:lloyd.wood@yahoo.co.uk">lloyd.wood@yahoo.co.uk</a>> wrote:<br><br></div><div><span></span></div><blockquote type="cite"><div><meta http-equiv="content-type" content="text/html; charset=utf-8"><div>"If it's not unique, it's not ethernet."</div><div><br></div><div>Um, no. See ausnog thread starting</div><div><span style="font-size: 15px; line-height: 19px; white-space: nowrap; -webkit-tap-highlight-color: rgba(26, 26, 26, 0.296875); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); -webkit-text-size-adjust: none; "><a href="http://lists.ausnog.net/pipermail/ausnog/2013-February/016484.html">http://lists.ausnog.net/pipermail/ausnog/2013-February/016484.html</a></span></div><div><br>On 23 Feb 2013, at 20:58, Paul Wilkins <<a href="mailto:paulwilkins369@gmail.com">paulwilkins369@gmail.com</a>> wrote:<br><br></div><blockquote type="cite">Alternatively, set B2 in the MAC's MSB to 1.This defines a locally administered address.<br><br>That said, if you buy a NIC that's branded "ethernet", the burnt in address will have been allocated by IANA to the manufacturer and will be unique. If it's not unique, it's not ethernet.<br>
<br>Paul Wilkins<br><br><div class="gmail_quote">On Sat, Feb 23, 2013 at 8:40 PM, Lloyd Wood <span dir="ltr"><<a href="mailto:lloyd.wood@yahoo.co.uk" target="_blank">lloyd.wood@yahoo.co.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="auto"><div><span style="font-size:15px;line-height:19px;white-space:nowrap"><a href="http://www.denx.de/wiki/DULG/WhereCanIGetAValidMACAddress" target="_blank">http://www.denx.de/wiki/DULG/WhereCanIGetAValidMACAddress</a></span><br>
<br></div><div><div class="h5"><div><br>On 23 Feb 2013, at 20:27, Geordie Guy <<a href="mailto:elomis@gmail.com" target="_blank">elomis@gmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div>Hey folks,<div>
<br></div><div>Is there a "555" style best practice for MAC addresses? I'm mucking around with programming electronics and writing Ethernet bits and pieces and while it's commonplace for me to hardcode 192.168.0/24 addresses to projects, I also need to code MAC addresses. Is there an OUI equivalent of 172.16/192.168/10.? or does nobody care because it's not relevant outside a layer 2 domain...</div>
<div><br></div><div><br></div><div>- Geordie</div></div></blockquote></div></div></div><br>
<br></blockquote></div><br>
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