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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>1- That is when NACK comes up! For example in DFZ(Default-free zone) when there is no entry(in CS,PIT or FIB), a NACK with some description will be sent back to the consumer.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>2- Could you elaborate a bit more on "each time it is published"? Generally a Data packet cannot traverse nodes if already there is no interest for it.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal>Sabet<o:p></o:p></p><p class=MsoNormal><span style='color:#44546A'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Ndn-interest [mailto:ndn-interest-bounces@lists.cs.ucla.edu] <b>On Behalf Of </b>Nour El Houda Ben Youssef<br><b>Sent:</b> Thursday, April 21, 2016 3:51 PM<br><b>To:</b> ndn-interest@lists.cs.ucla.edu<br><b>Subject:</b> [Ndn-interest] ndn question<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=FR>Dear ndn users<o:p></o:p></span></p><p class=MsoNormal><span lang=FR><o:p> </o:p></span></p><p class=MsoNormal>I would like to ask what really happens when an ndn node receives an interest that he can’t satisfy (no corresponding content in its CS, no corresponding entry neither in its PIT nor in its FIB)<o:p></o:p></p><p class=MsoNormal>Does it drop it ?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Another question on extending ndn with pub/sub mechanism, in fact each time we need to retrieve a content we have to express an interest <o:p></o:p></p><p class=MsoNormal>What if I want to express the interest once and receive the corresponding content each time it is published?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Best regards<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=1376 style='width:825.4pt;border-collapse:collapse'><tr style='height:60.2pt'><td width=98 valign=top style='width:58.7pt;padding:0in 0in 0in 0in;height:60.2pt'><p class=MsoNormal style='line-height:115%'><b><span style='font-size:8.0pt;line-height:115%;font-family:DokChampa;color:gray'><img width=100 height=50 id="Image_x0020_1" src="cid:image001.png@01D19FB3.448DEF90" alt=logoslogan.png><o:p></o:p></span></b></p></td><td width=1167 valign=top style='width:700.4pt;padding:0in 5.4pt 0in 5.4pt;height:60.2pt'><p class=MsoNormal style='line-height:115%'><b><span style='font-size:8.0pt;line-height:115%;font-family:DokChampa;color:#31849B'>Nour El Houda BEN YOUSSEF</span></b><span style='font-size:8.0pt;line-height:115%;font-family:"Tahoma","sans-serif";color:gray'>|Doctorante</span><span style='font-size:8.0pt;line-height:115%;font-family:DokChampa;color:gray'><o:p></o:p></span></p><p class=MsoNormal style='line-height:115%'><span style='font-size:8.0pt;line-height:115%;font-family:DokChampa;color:#7F7F7F'>Technopark El Ghazela 2088 Tunis- Tunisia <o:p></o:p></span></p><p class=MsoNormal style='line-height:115%;text-autospace:none'><span style='font-size:8.0pt;line-height:115%;font-family:DokChampa;color:gray'>Phone: +216 31 34 00 14 <o:p></o:p></span></p><p class=MsoNormal style='line-height:115%;text-autospace:none'><span style='font-size:8.0pt;line-height:115%;font-family:DokChampa;color:gray'>Mobile: +216 24 54 24 54 <o:p></o:p></span></p><p class=MsoNormal style='line-height:115%;text-autospace:none'><span style='font-size:8.0pt;line-height:115%;font-family:DokChampa;color:#7F7F7F'><a href="http://www.wevioo.com">www.wevioo.com</a><o:p></o:p></span></p><p class=MsoNormal style='line-height:115%'><span style='font-size:8.0pt;line-height:115%;font-family:DokChampa;color:gray'>Paris – Tunis - Dubai – Alger<o:p></o:p></span></p></td><td width=111 valign=top style='width:66.3pt;padding:0in 5.4pt 0in 5.4pt;height:60.2pt'><p class=MsoNormal align=right style='text-align:right;line-height:115%;text-autospace:none'><span style='font-size:4.0pt;line-height:115%;font-family:DokChampa;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal align=right style='text-align:right;line-height:115%;text-autospace:none'><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal align=right style='text-align:right;line-height:115%;text-autospace:none'><span style='font-size:9.0pt;line-height:115%;font-family:DokChampa;color:gray'><o:p> </o:p></span></p></td></tr></table><p class=MsoNormal><span lang=FR><o:p> </o:p></span></p><p class=MsoNormal><span lang=FR><o:p> </o:p></span></p></div></body></html>