答复: Methods to label the passiv e interfaces within ISIS

"Aijun Wang" <[email protected]> Fri, 10 Jan 2020 10:22:08 +0800
Newsgroups gmane.ietf.isis
Message-ID <[email protected]>
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Hi, Les, Robert and other experts within LSR:

=20

We have submitted the draft that related to the passive interface =
attribute, please review it at  =
https://tools.ietf.org/html/draft-wang-lsr-passive-interface-attribute-00=


=20

If you are interested, we are also welcome you as the co-author to put =
forward it together.

Any comments are welcome.

=20

Thanks in advance.

=20

=20

Best Regards.

=20

Aijun Wang

China Telecom

=20

=E5=8F=91=E4=BB=B6=E4=BA=BA: [email protected] =
[mailto:[email protected]] =E4=BB=A3=E8=A1=A8 Aijun Wang
=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4: 2020=E5=B9=B41=E6=9C=887=E6=97=A5 =
18:57
=E6=94=B6=E4=BB=B6=E4=BA=BA: Robert Raszuk
=E6=8A=84=E9=80=81: Les Ginsberg (ginsberg); [email protected]
=E4=B8=BB=E9=A2=98: Re: [Lsr] Methods to label the passive interfaces =
within ISIS

=20

Hi, Robert:

There are situations that we want to distinguish the passive interfaces =
from the normal interfaces. I will try to write one draft in recent days =
to describe it and for further discussion.

=20

Thanks in advance.

Aijun Wang

China Telecom





On Jan 7, 2020, at 18:14, Robert Raszuk <[email protected]> wrote:

=EF=BB=BF

Hi Aijun,

=20

Right .. I took your email as an attempt/request to actually advertise =
passive links in the first place.=20

=20

May we know what difference does it make to you if reachable prefix is =
part of an active vs passive interface from IGP point of view ?=20

=20

Thx,

R.

=20

=20

On Tue, Jan 7, 2020 at 2:08 AM Aijun Wang <[email protected] =
<mailto:[email protected]> > wrote:

Hi, Robert:

=20

Thanks for your information.

TLV-22 is used to describe the IS neighbor and the link between them. As =
for the passive interfaces, there may be no neighbor.=20

It seems the sub-TLV within this TLV is not the appropriate place to put =
this information?

=20

P.S. I changed the thread to reflect the conversion topic.

=20

Best Regards.

=20

Aijun Wang

China Telecom

=20

=E5=8F=91=E4=BB=B6=E4=BA=BA: [email protected] =
[mailto:[email protected]] =E4=BB=A3=E8=A1=A8 Robert Raszuk
=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4: 2020=E5=B9=B41=E6=9C=886=E6=97=A5 =
18:58
=E6=94=B6=E4=BB=B6=E4=BA=BA: Aijun Wang
=E6=8A=84=E9=80=81: Les Ginsberg (ginsberg); [email protected]
=E4=B8=BB=E9=A2=98: Re: [Lsr] =E7=AD=94=E5=A4=8D: Is it necessary to =
expand the IS-IS level to 8?

=20

Aijun,

=20

We just want to distinguish the passive interfaces from other normal =
interfaces within ISIS domain.  It seems that the =E2=80=9CAttribute =
Flags=E2=80=9D that described in =
https://tools.ietf.org/html/rfc7794#section-2.1 is the most appropriate =
place to extend to carry such information.

=20

Really ?

=20

IMO much better place is to define new sub-TLV of TLV-22 and mark it =
there as passive link.

=20

Ref: https://tools..ietf.org/html/rfc5029 =
<https://tools.ietf.org/html/rfc5029>=20

=20

Now more interesting perhaps is to find out how ISIS is supposed to =
react to such information. Or is the intention to carry it just as an =
opaque info say for show commands use only ?=20

=20

Thx,
R.

=20

_______________________________________________
Lsr mailing list
[email protected]
https://www.ietf.org/mailman/listinfo/lsr


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</o:shapelayout></xml><![endif]--></head><body lang=3DZH-CN link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Hi, Les, Robert and other experts within LSR:<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>We have submitted the draft that related to the passive interface =
attribute, please review it at =C2=A0</span><span lang=3DEN-US><a =
href=3D"https://tools.ietf.org/html/draft-wang-lsr-passive-interface-attr=
ibute-00">https://tools.ietf.org/html/draft-wang-lsr-passive-interface-at=
tribute-00</a><o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>If you are interested, we are also welcome you as the co-author to =
put forward it together.<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Any comments are welcome.<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Thanks in advance.<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Best Regards.<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Aijun Wang<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>China Telecom</span><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><div><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt'>=E5=8F=91=E4=BB=B6=E4=BA=BA<span =
lang=3DEN-US>:</span></span></b><span lang=3DEN-US =
style=3D'font-size:10.0pt'> [email protected] =
[mailto:[email protected]] </span><b><span =
style=3D'font-size:10.0pt'>=E4=BB=A3=E8=A1=A8 </span></b><span =
lang=3DEN-US style=3D'font-size:10.0pt'>Aijun Wang<br></span><b><span =
style=3D'font-size:10.0pt'>=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4<span =
lang=3DEN-US>:</span></span></b><span lang=3DEN-US =
style=3D'font-size:10.0pt'> 2020</span><span =
style=3D'font-size:10.0pt'>=E5=B9=B4<span =
lang=3DEN-US>1</span>=E6=9C=88<span lang=3DEN-US>7</span>=E6=97=A5<span =
lang=3DEN-US> 18:57<br></span><b>=E6=94=B6=E4=BB=B6=E4=BA=BA<span =
lang=3DEN-US>:</span></b><span lang=3DEN-US> Robert =
Raszuk<br></span><b>=E6=8A=84=E9=80=81<span =
lang=3DEN-US>:</span></b><span lang=3DEN-US> Les Ginsberg (ginsberg); =
[email protected]<br></span><b>=E4=B8=BB=E9=A2=98<span =
lang=3DEN-US>:</span></b><span lang=3DEN-US> Re: [Lsr] Methods to label =
the passive interfaces within =
ISIS<o:p></o:p></span></span></p></div></div><p class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US>Hi, Robert:<o:p></o:p></span></p><div><p =
class=3DMsoNormal><span lang=3DEN-US>There are situations that we want =
to distinguish the passive interfaces from the normal interfaces. I will =
try to write one draft in recent days to describe it and for further =
discussion.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><span lang=3DEN-US>Thanks in =
advance.<o:p></o:p></span></p><div><p class=3DMsoNormal><span =
lang=3DEN-US>Aijun Wang<o:p></o:p></span></p><div><p =
class=3DMsoNormal><span lang=3DEN-US>China =
Telecom<o:p></o:p></span></p></div></div><div><p class=3DMsoNormal><span =
lang=3DEN-US><br><br><o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><span lang=3DEN-US>On Jan 7, 2020, at =
18:14, Robert Raszuk &lt;<a =
href=3D"mailto:[email protected]">[email protected]</a>&gt; =
wrote:<o:p></o:p></span></p></div><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><p =
class=3DMsoNormal><span =
lang=3DEN-US>=EF=BB=BF<o:p></o:p></span></p><div><div><p =
class=3DMsoNormal><span lang=3DEN-US>Hi =
Aijun,<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p></div><p =
class=3DMsoNormal><span lang=3DEN-US>Right .. I took your&nbsp;email as =
an attempt/request&nbsp;to actually advertise passive links in the first =
place.&nbsp;<o:p></o:p></span></p><div><p class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p></div><div><div><p =
class=3DMsoNormal><span lang=3DEN-US>May we know what difference does it =
make to you if reachable prefix is part of an active vs passive =
interface from IGP point of&nbsp;view =
?&nbsp;<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span =
lang=3DEN-US>Thx,<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
lang=3DEN-US>R.<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p></div></div></div><p =
class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p><div><div><p =
class=3DMsoNormal><span lang=3DEN-US>On Tue, Jan 7, 2020 at 2:08 AM =
Aijun Wang &lt;<a =
href=3D"mailto:[email protected]">[email protected]</a>&=
gt; wrote:<o:p></o:p></span></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Hi, Robert:</span><span lang=3DEN-US><o:p></o:p></span></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span lang=3DEN-US><o:p></o:p></span></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-family:"Calibri","sans-serif";color:#1F497D'>Thanks for =
your information.</span><span lang=3DEN-US><o:p></o:p></span></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>TLV-22 is used to describe the IS neighbor and the link between them. =
As for the passive interfaces, there may be no neighbor. </span><span =
lang=3DEN-US><o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>It seems the sub-TLV within this TLV is not the appropriate place to =
put this information?</span><span lang=3DEN-US><o:p></o:p></span></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span lang=3DEN-US><o:p></o:p></span></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>P.S. I changed the thread to reflect the conversion =
topic.</span><span lang=3DEN-US><o:p></o:p></span></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span lang=3DEN-US><o:p></o:p></span></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:ju=
stify;text-justify:inter-ideograph'><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Best Regards.</span><span lang=3DEN-US><o:p></o:p></span></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:ju=
stify;text-justify:inter-ideograph'><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span lang=3DEN-US><o:p></o:p></span></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:ju=
stify;text-justify:inter-ideograph'><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Aijun Wang</span><span lang=3DEN-US><o:p></o:p></span></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:ju=
stify;text-justify:inter-ideograph'><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>China Telecom</span><span lang=3DEN-US><o:p></o:p></span></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span lang=3DEN-US><o:p></o:p></span></p><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span =
style=3D'font-size:10.0pt'>=E5=8F=91=E4=BB=B6=E4=BA=BA<span =
lang=3DEN-US>:</span></span></b><span lang=3DEN-US =
style=3D'font-size:10.0pt'> <a href=3D"mailto:[email protected]" =
target=3D"_blank">[email protected]</a> [mailto:<a =
href=3D"mailto:[email protected]" =
target=3D"_blank">[email protected]</a>] </span><b><span =
style=3D'font-size:10.0pt'>=E4=BB=A3=E8=A1=A8 </span></b><span =
lang=3DEN-US style=3D'font-size:10.0pt'>Robert Raszuk<br></span><b><span =
style=3D'font-size:10.0pt'>=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4<span =
lang=3DEN-US>:</span></span></b><span lang=3DEN-US =
style=3D'font-size:10.0pt'> 2020</span><span =
style=3D'font-size:10.0pt'>=E5=B9=B4<span =
lang=3DEN-US>1</span>=E6=9C=88<span lang=3DEN-US>6</span>=E6=97=A5<span =
lang=3DEN-US> 18:58<br></span><b>=E6=94=B6=E4=BB=B6=E4=BA=BA<span =
lang=3DEN-US>:</span></b><span lang=3DEN-US> Aijun =
Wang<br></span><b>=E6=8A=84=E9=80=81<span lang=3DEN-US>:</span></b><span =
lang=3DEN-US> Les Ginsberg (ginsberg); <a href=3D"mailto:[email protected]" =
target=3D"_blank">[email protected]</a><br></span><b>=E4=B8=BB=E9=A2=98<span =
lang=3DEN-US>:</span></b><span lang=3DEN-US> Re: [Lsr] =
</span>=E7=AD=94=E5=A4=8D<span lang=3DEN-US>: Is it necessary to expand =
the IS-IS level to 8?</span></span><span =
lang=3DEN-US><o:p></o:p></span></p></div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>&nbsp;<o:p></o:p></span></p><div><div><div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>Aijun,<o:p></o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>&nbsp;<o:p></o:p></span></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5=
..0pt'><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US style=3D'color:#1F497D'>We just want to distinguish the =
passive interfaces from other normal interfaces within ISIS =
domain.&nbsp; It seems that the =E2=80=9CAttribute Flags=E2=80=9D that =
described in </span><span lang=3DEN-US><a =
href=3D"https://tools.ietf.org/html/rfc7794#section-2.1" =
target=3D"_blank">https://tools.ietf.org/html/rfc7794#section-2.1</a><spa=
n style=3D'color:#1F497D'> is the most appropriate place to extend to =
carry such =
information.</span><o:p></o:p></span></p></div></blockquote><div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>&nbsp;<o:p></o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>Really ?<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>&nbsp;<o:p></o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>IMO much better place is to define new sub-TLV of TLV-22 =
and mark it there as passive link.<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>&nbsp;<o:p></o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>Ref:&nbsp;<a href=3D"https://tools.ietf.org/html/rfc5029" =
target=3D"_blank">https://tools..ietf.org/html/rfc5029</a><o:p></o:p></sp=
an></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>&nbsp;<o:p></o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>Now more interesting perhaps is to find out how ISIS is =
supposed to react to such information. Or is the intention to carry it =
just as an opaque info say for show commands use only =
?&nbsp;<o:p></o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>&nbsp;<o:p></o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>Thx,<br>R.<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>&nbsp;<o:p></o:p></span></p></div></div></div></div></div></=
blockquote></div><p class=3DMsoNormal><span =
lang=3DEN-US>_______________________________________________<br>Lsr =
mailing list<br><a href=3D"mailto:[email protected]">[email protected]</a><br><a =
href=3D"https://www.ietf.org/mailman/listinfo/lsr">https://www.ietf.org/m=
ailman/listinfo/lsr</a><o:p></o:p></span></p></div></blockquote></div></d=
iv></body></html>
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