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<TITLE>RE: [dns-operations] Where to find "DNS resolution path corruption"?</TITLE>
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<P><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">dns-operations-bounces@lists.oarci.net wrote:</FONT></SPAN>
<BR><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">> </FONT></SPAN>
<BR><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">> Your list of dumb DNS things is larger than my short list of</FONT></SPAN>
<BR><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">> dumb DNS things, and I'll ask the ISPs not to do any of them</FONT></SPAN>
<BR><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">> for all the obvious reasons. Even if they listened, what</FONT></SPAN>
<BR><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">> else could go wrong? Here are my proposed arguments (comments</FONT></SPAN>
<BR><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">> welcomed): </FONT></SPAN>
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<P><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">Perhaps not so much on</FONT> <FONT SIZE=2 FACE="Arial">recusive nameservers, but more on autoritative nameservers and caching, I'm usualy having a hard time explaining ISP's they should delete their authoritative zone when authority is transfered away from them. Most ISP's seem to think that a record allways expires in a cache, and it then allways queries the root path for a new entry, instead of only updating the TTL from the authoritative source they allready have in their cache. They mistakenly think they are no longer queried after their former parrent changed the delegation.</FONT></SPAN></P>
<P><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">Antoin Verschuren</FONT></SPAN>
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<P><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">Technical Policy Advisor</FONT></SPAN>
<BR><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">SIDN</FONT></SPAN>
<BR><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">Utrechtseweg 310</FONT></SPAN>
<BR><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">PO Box 5022</FONT></SPAN>
<BR><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">6802 EA Arnhem</FONT></SPAN>
<BR><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">The Netherlands</FONT></SPAN>
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<P><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">T +31 26 3525500</FONT></SPAN>
<BR><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">F +31 26 3525505</FONT></SPAN>
<BR><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">M +31 6 23368970</FONT></SPAN>
<BR><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">E antoin.verschuren@sidn.nl</FONT></SPAN>
<BR><SPAN LANG="nl"><FONT SIZE=2 FACE="Arial">W </FONT></SPAN><A HREF="http://www.sidn.nl/"><SPAN LANG="nl"><U><FONT COLOR="#0000FF" SIZE=2 FACE="Arial">http://www.sidn.nl/</FONT></U></SPAN></A><SPAN LANG="nl"></SPAN>
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