<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Aptos;
panose-1:0 0 0 0 0 0 0 0 0 0;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
p.MsoListParagraph, li.MsoListParagraph, div.MsoListParagraph
{mso-style-priority:34;
margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:.5in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
p.m-2940071027920571956msolistparagraph, li.m-2940071027920571956msolistparagraph, div.m-2940071027920571956msolistparagraph
{mso-style-name:m_-2940071027920571956msolistparagraph;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
p.m-2940071027920571956m128766250028595583msolistparagraph, li.m-2940071027920571956m128766250028595583msolistparagraph, div.m-2940071027920571956m128766250028595583msolistparagraph
{mso-style-name:m_-2940071027920571956m128766250028595583msolistparagraph;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.m-2940071027920571956gmailsignatureprefix
{mso-style-name:m_-2940071027920571956gmailsignatureprefix;}
span.EmailStyle24
{mso-style-type:personal-reply;
font-family:"Aptos",serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;
mso-ligatures:none;}
@page WordSection1
{size:8.5in 11.0in;
margin:70.85pt 70.85pt 56.7pt 70.85pt;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:923147096;
mso-list-template-ids:-1958312258;}
@list l0:level1
{mso-level-tab-stop:.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level2
{mso-level-tab-stop:1.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level3
{mso-level-tab-stop:1.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level4
{mso-level-tab-stop:2.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level5
{mso-level-tab-stop:2.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level6
{mso-level-tab-stop:3.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level7
{mso-level-tab-stop:3.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level8
{mso-level-tab-stop:4.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level9
{mso-level-tab-stop:4.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1
{mso-list-id:1106534235;
mso-list-template-ids:-314555894;}
@list l1:level1
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level2
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:1.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level3
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:1.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level4
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:2.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level5
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:2.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level6
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:3.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level7
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:3.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level8
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:4.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level9
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:4.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l2
{mso-list-id:1339501535;
mso-list-template-ids:-1934576232;}
@list l2:level1
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l2:level2
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:1.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l2:level3
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:1.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l2:level4
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:2.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l2:level5
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:2.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l2:level6
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:3.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l2:level7
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:3.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l2:level8
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:4.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l2:level9
{mso-level-number-format:alpha-upper;
mso-level-tab-stop:4.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l3
{mso-list-id:1915242657;
mso-list-type:hybrid;
mso-list-template-ids:-2121886494 1282996710 67567619 67567621 67567617 67567619 67567621 67567617 67567619 67567621;}
@list l3:level1
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Symbol;
mso-fareast-font-family:Calibri;
mso-bidi-font-family:"Times New Roman";}
@list l3:level2
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:"Courier New";}
@list l3:level3
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Wingdings;}
@list l3:level4
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Symbol;}
@list l3:level5
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:"Courier New";}
@list l3:level6
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Wingdings;}
@list l3:level7
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Symbol;}
@list l3:level8
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:"Courier New";}
@list l3:level9
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Wingdings;}
@list l4
{mso-list-id:1947691187;
mso-list-template-ids:-336835826;}
@list l4:level1
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l4:level2
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:1.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l4:level3
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:1.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l4:level4
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:2.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l4:level5
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:2.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l4:level6
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:3.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l4:level7
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:3.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l4:level8
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:4.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l4:level9
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:4.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l5
{mso-list-id:2112356456;
mso-list-template-ids:-1507954892;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span style='font-family:"Aptos",serif'>Thanks for that analysis, Jeremy. We’ve been talking about at least since STINT several years ago, and I really think it’s an idea whose time has come.<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Aptos",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Aptos",serif'>Scott<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Aptos",serif'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> Jeremy.Mayer@dlr.de <Jeremy.Mayer@dlr.de> <br><b>Sent:</b> Saturday, March 9, 2024 8:01 AM<br><b>To:</b> vint@google.com; sburleig.sb@gmail.com<br><b>Cc:</b> Tomaso.deCola@dlr.de; sis-dtn@mailman.ccsds.org<br><b>Subject:</b> RE: [Sis-dtn] IP networking within DTN-based protocol architectures<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-GB>Hi,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>That’s a fair point. Generally, I’d say that BP-POSIX could work with the following:<o:p></o:p></span></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraph style='margin-left:0in;mso-list:l3 level1 lfo3'><span lang=EN-GB>Bind – works: sets source EID.<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l3 level1 lfo3'><span lang=EN-GB>Listen – works; sets source EID and opens reception. <o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l3 level1 lfo3'><span lang=EN-GB>Connect – UDP style, sets default destination address.<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l3 level1 lfo3'><span lang=EN-GB>Send – only valid for connected bundlesocks. <o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l3 level1 lfo3'><span lang=EN-GB>Sendto/sendmsg – works.<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l3 level1 lfo3'><span lang=EN-GB>Recv – works.<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l3 level1 lfo3'><span lang=EN-GB>Recvfrom/recvmsg – works, probably should support “wildcard” EIDs, at least for services. <o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l3 level1 lfo3'><span lang=EN-GB>Getaddrinfo and friends – not required<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l3 level1 lfo3'><span lang=EN-GB>Select – Works, highly implementation dependent.<o:p></o:p></span></li></ul><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>BSD sockets really do work for everything!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>Thanks,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>Jeremy<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> Vint Cerf <<a href="mailto:vint@google.com">vint@google.com</a>> <br><b>Sent:</b> Samstag, 9. März 2024 16:51<br><b>To:</b> Scott Burleigh <<a href="mailto:sburleig.sb@gmail.com">sburleig.sb@gmail.com</a>><br><b>Cc:</b> Mayer, Jeremy <<a href="mailto:Jeremy.Mayer@dlr.de">Jeremy.Mayer@dlr.de</a>>; de Cola, Tomaso <<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a>>; Dr. Keith L Scott via SIS-DTN <<a href="mailto:sis-dtn@mailman.ccsds.org">sis-dtn@mailman.ccsds.org</a>><br><b>Subject:</b> Re: [Sis-dtn] IP networking within DTN-based protocol architectures<o:p></o:p></p></div><p class=MsoNormal><span lang=DE><o:p> </o:p></span></p><div><p class=MsoNormal><span lang=DE>Yes generally speaking<o:p></o:p></span></p></div><p class=MsoNormal><span lang=DE><o:p> </o:p></span></p><div><div><p class=MsoNormal><span lang=DE>On Sat, Mar 9, 2024, 10:43 <<a href="mailto:sburleig.sb@gmail.com">sburleig.sb@gmail.com</a>> wrote:<o:p></o:p></span></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Aptos",serif'>I think we get closer to BSD/POSIX if we use UDP as a model. The attenuated UDP notion of connect() would work for BP, I think.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Aptos",serif'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Aptos",serif'>Scott</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Aptos",serif'> </span><o:p></o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>From:</b> SIS-DTN <<a href="mailto:sis-dtn-bounces@mailman.ccsds.org" target="_blank">sis-dtn-bounces@mailman.ccsds.org</a>> <b>On Behalf Of </b>Jeremy Mayer via SIS-DTN<br><b>Sent:</b> Saturday, March 9, 2024 12:35 AM<br><b>To:</b> <a href="mailto:vint@google.com" target="_blank">vint@google.com</a>; <a href="mailto:Tomaso.deCola@dlr.de" target="_blank">Tomaso.deCola@dlr.de</a><br><b>Cc:</b> <a href="mailto:sis-dtn@mailman.ccsds.org" target="_blank">sis-dtn@mailman.ccsds.org</a><br><b>Subject:</b> Re: [Sis-dtn] IP networking within DTN-based protocol architectures<o:p></o:p></p></div></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB>Hi,</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB>I’m tempted to agree. I’ve seen limited utility in IP->BP encap, as (other than some unidirectional UDP-based applications), the assumptions made in IP networks (especially TCP) do not scale well to DTN environments. The two largest issues I see are:</span><o:p></o:p></p><ol start=1 type=A><li class=m-2940071027920571956msolistparagraph style='mso-list:l1 level1 lfo6'><span lang=EN-GB>The assumption that relatively low-latency and bidirectional communication is available.</span><o:p></o:p></li><li class=m-2940071027920571956msolistparagraph style='mso-list:l1 level1 lfo6'><span lang=EN-GB>The layering of stream and message-based semantics.</span><o:p></o:p></li></ol><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB>Almost every TCP-ish application which I’ve seen run over BP winds up with exceptionally low performance, unless some sort of PEP is integrated, which adds complexity, failure points, and fragility. </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB>+1 for the notion of a standard API though, with the additional caveat that we should standardize nomenclature across implementations. We could likely reuse about 80% of the BSD/POSIX interface for BP, with the notable exception of connect.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB>Thanks,</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB>Jeremy</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB> </span><o:p></o:p></p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>From:</b> SIS-DTN <<a href="mailto:sis-dtn-bounces@mailman.ccsds.org" target="_blank">sis-dtn-bounces@mailman.ccsds.org</a>> <b>On Behalf Of </b>Vint Cerf via SIS-DTN<br><b>Sent:</b> Freitag, 8. März 2024 12:31<br><b>To:</b> de Cola, Tomaso <<a href="mailto:Tomaso.deCola@dlr.de" target="_blank">Tomaso.deCola@dlr.de</a>><br><b>Cc:</b> <a href="mailto:sis-dtn@mailman.ccsds.org" target="_blank">sis-dtn@mailman.ccsds.org</a><br><b>Subject:</b> Re: [Sis-dtn] IP networking within DTN-based protocol architectures<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE> </span><o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE>The more I think about this, the less I like trying to manage off-Earth IP networks remotely. I think I would much rather see native applications running over BP. In any case we need to develop standard APIs for BP, such as the Sockets interface for Linux/Unix/Posix. </span><o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE> </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE>We do need to figure out how IP-based and BP-based applications interwork. What do Domain Names mean in the BP context for example. </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE> </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE>v</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE> </span><o:p></o:p></p></div></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE> </span><o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE>On Fri, Mar 8, 2024 at 4:24 AM Tomaso de Cola via SIS-DTN <<a href="mailto:sis-dtn@mailman.ccsds.org" target="_blank">sis-dtn@mailman.ccsds.org</a>> wrote:</span><o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'><div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE>Dear All,</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>as mentioned yesterday during our DTN weekly, during the past Fall meeting a presentation was given by University of Nanjing with the support of Chinese agency about IP-networking within DTN-based protocol stacks, especially for planetary network segments (i.e. what is often referred to as IP-islands). <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>The link to that presentation is as follows:<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a href="https://cwe.ccsds.org/sis/docs/SIS-DTN/Meeting%20Materials/2023/Fall%202023%20SIS-DTN/Possible%20BOF%20Discussion.pptx?d=w44d31f0b3be649e4bf24ec4ae50479a1" target="_blank">https://cwe.ccsds.org/sis/docs/SIS-DTN/Meeting%20Materials/2023/Fall%202023%20SIS-DTN/Possible%20BOF%20Discussion.pptx?d=w44d31f0b3be649e4bf24ec4ae50479a1</a><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>The proposal made there was for a BOF (i.e. towards a WG formation), which I see however too premature. On the contrary, I’d be more in favour for a SIG (Special Interest Group), happening outside the DTN WG.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>As discussed yesterday, key points to clarify/agree are:<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><ol start=1 type=1><li class=m-2940071027920571956m128766250028595583msolistparagraph style='mso-list:l0 level1 lfo9'>Is the proposal sound and meaningful to be addressed?<o:p></o:p></li><li class=m-2940071027920571956m128766250028595583msolistparagraph style='mso-list:l0 level1 lfo9'>Is appropriate for the SIS area or should be better addressed at architectural level in SEA (maybe it can be even a cross-area initiative)?<o:p></o:p></li><li class=m-2940071027920571956m128766250028595583msolistparagraph style='mso-list:l0 level1 lfo9'>In the case of SIS, is there significant support to start this? In other words, which agencies have interest in contributing to this activity?<o:p></o:p></li></ol><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Thank you for sharing comments/objections/suggestions.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Have a nice weekend,<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Tomaso<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE style='font-size:10.0pt;font-family:"Arial",sans-serif;color:dimgray'>————————————————————————</span><span lang=DE style='font-size:12.0pt;font-family:"Times New Roman",serif'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span lang=DE style='font-size:10.0pt;font-family:"Arial",sans-serif;color:dimgray'>Deutsches Zentrum für Luft- und Raumfahrt</span></b><span lang=DE style='font-size:10.0pt;font-family:"Arial",sans-serif;color:dimgray'> (DLR)</span><span lang=DE style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D'> <br></span><span lang=DE style='font-size:10.0pt;font-family:"Arial",sans-serif;color:dimgray'>German Aerospace Center</span><span lang=DE style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D'> <br></span><span lang=DE style='font-size:10.0pt;font-family:"Arial",sans-serif;color:dimgray'>Institute of Communications and Navigation | Satellite Networks | Oberpfaffenhofen | 82234 Wessling | Germany</span><span lang=DE style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span lang=IT style='font-size:10.0pt;font-family:"Arial",sans-serif;color:dimgray'>Tomaso de Cola, Ph.D.</span></b><span lang=IT style='color:#1F497D'> | </span><b><span lang=IT style='font-size:10.0pt;font-family:"Arial",sans-serif;color:dimgray'>Integrated Satellite Systems (INS) Team Leader<br></span></b><span lang=DE style='font-size:10.0pt;font-family:"Arial",sans-serif;color:dimgray'>Telefon <a href="tel:+49%208153%20282156" target="_blank">+49 8153 28-2156</a> | Telefax <a href="tel:+49%208153%20282844" target="_blank">+49 8153 28-2844</a> |</span><span lang=DE style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D'> </span><span style='color:#1F497D'><a href="mailto:sandro.scalise@dlr.de" target="_blank"><span lang=DE style='font-size:10.0pt;font-family:"Arial",sans-serif'>tomaso.decola@dlr.de</span></a></span><span lang=DE style='color:#1F497D'> <br></span><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D'><a href="http://www.dlr.de/kn/institut/abteilungen/san" target="_blank"><span lang=DE>http://www.dlr.de/kn/institut/abteilungen/san</span></a></span><span style='color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE> </span><o:p></o:p></p></div></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE>_______________________________________________<br>SIS-DTN mailing list<br><a href="mailto:SIS-DTN@mailman.ccsds.org" target="_blank">SIS-DTN@mailman.ccsds.org</a><br><a href="https://mailman.ccsds.org/cgi-bin/mailman/listinfo/sis-dtn" target="_blank">https://mailman.ccsds.org/cgi-bin/mailman/listinfo/sis-dtn</a></span><o:p></o:p></p></div></blockquote></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE><br clear=all></span><o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE> </span><o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span class=m-2940071027920571956gmailsignatureprefix><span lang=DE>-- </span></span><o:p></o:p></p><div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE>Please send any postal/overnight deliveries to:</span><o:p></o:p></p></div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE>Vint Cerf</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE>Google, LLC</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE>1900 Reston Metro Plaza, 16th Floor</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE>Reston, VA 20190</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE>+1 (571) 213 1346</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE> </span><o:p></o:p></p></div></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE> </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE>until further notice</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE> </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE> </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=DE> </span><o:p></o:p></p></div></div></div></div></div></blockquote></div></div></body></html>