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<p class="MsoNormal">Folks,<o:p></o:p></p>
<p class="MsoNormal"> Recently had an issue with someone who wanted this for a TXT record:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">murt2 IN TXT "path=\";<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> Now, not sure wny they wanted it – maybe the root directory in Windows??? But anyway, BIND does not like it.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">zone example.com/IN: loading from master file db.example.com failed: unbalanced quotes<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> Of course, we could escape the backslash. Which BIND then likes and the zone will load. But a dig gives you:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">;; ANSWER SECTION:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">murt2.example.com. 83000 IN TXT "path=\\"<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> Which isn’t really the same thing? Took a look at RFC1464 (Using DNS to Store Arbitrary String Attributes), <a href="https://tools.ietf.org/html/rfc1464">https://tools.ietf.org/html/rfc1464</a>, read this:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New""> All printable ASCII characters are permitted in the attribute value.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New""> No characters need to be quoted with a "`". In other words, the<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New""> first unquoted equals sign in the TXT record is the name/value<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New""> delimiter. All subsequent characters are part of the value.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New""> Once again, note that in most implementations the backslash character<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New""> is an active quoting character (and must, itself, be quoted).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"> That last sentence really has me stuck! Too many adjectives? Are there ‘inactive’ quoting characters?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The RFC did have an example, but I couldn’t work it out...<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New""> Attribute Attribute Internal Form External Form<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New""> Name Value (server to resolver) (TXT record)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New""> = \= `==\= "`==\\="<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> Any suggestions are welcome & please excuse my attempts at humor above.<o:p></o:p></p>
<p class="MsoNormal"> Best regards!<o:p></o:p></p>
<p class="MsoNormal">John<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">---------------- <br>
John Murtari – <a href="mailto:jm5903@att.com">jm5903@att.com</a><o:p></o:p></p>
<p class="MsoNormal">Ciberspring<o:p></o:p></p>
<p class="MsoNormal">office: 315-944-0998<o:p></o:p></p>
<p class="MsoNormal">cell: 315-430-2702<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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