Message-ID: <tencent_10E83A04308503CC2C2D16AEF2B0F03D7F05@qq.com>
Date: Tue, 4 Jun 2024 08:38:42 +0800
From: "Chongfeng Xie" <chongfeng.xie@foxmail.com>
To: "Ron Bonica" <rbonica=40juniper.net@dmarc.ietf.org>,
	"Zaheduzzaman Sarker" <zahed.sarker.ietf@gmail.com>,
	"Bob Hinden" <bob.hinden@gmail.com>
References: <171706936834.39334.16043434987658907025@ietfa.amsl.com>,
	<F6A70A5A-D620-47EC-996B-8DBD01CF813C@gmail.com>,
	<CAEh=tcd1MFgZz5frZXRhrK9N2QeJDSQrmRgFypmj1hr6Hd0jrg@mail.gmail.com>,
	<BL0PR05MB5316DEB962DBA1B219E3F9B5AEF32@BL0PR05MB5316.namprd05.prod.outlook.com>
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CC: 6man Chairs <6man-chairs@ietf.org>, IESG <iesg@ietf.org>,
 ipv6 <ipv6@ietf.org>,
 "draft-ietf-6man-comp-rtg-hdr@ietf.org" <draft-ietf-6man-comp-rtg-hdr@ietf.org>
Precedence: list
Subject: =?utf-8?q?=5BIPv6=5DRe=3A_Zaheduzzaman_Sarker=27s_Discuss_on_draft-ietf-6man?=
	=?utf-8?q?-comp-rtg-hdr-09=3A_=28with_DISCUSS=29?=
Archived-At: 
 <https://mailarchive.ietf.org/arch/msg/ipv6/jvTOLomioFWHULBqZaTGLVWDIM4>

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charse=
t=3DUTF-8"><style>body { line-height: 1.5; }blockquote { margin-top: 0px; =
margin-bottom: 0px; margin-left: 0.5em; }p { margin-top: 0px; margin-botto=
m: 0px; }div.FoxDiv20240604083653186899 { }body { font-size: 14px; font-fa=
mily: "Microsoft YaHei UI"; color: rgb(0, 0, 0); line-height: 1.5; }</styl=
e></head><body>=0A<div><span></span><div>Hi Ron,</div><div><br></div><div>=
In section 4, it mentions that,</div><div><br></div><div>&nbsp; &nbsp; &nb=
sp; Each CRH-FIB entry contains:</div><div><br></div><div>&nbsp; &nbsp;*&n=
bsp; An IPv6 address.</div><div><br></div><div>&nbsp; &nbsp;*&nbsp; A topo=
logical function.</div><div><br></div><div>&nbsp; &nbsp;*&nbsp; Arguments =
for the topological function.&nbsp; (Optional).</div><div><br></div><div>I=
 think CRH-SID is also contained in each entry of CRH-FIB. When the entrie=
s in the CRH-FIB are populated, the CRH-SIDs are populated as well, is my =
understanding correct?</div></div>=0A<blockquote style=3D"margin-Top: 0px;=
 margin-Bottom: 0px; margin-Left: 0.5em; margin-Right: inherit"><div>&nbsp=
;</div><div>Best regards</div><div>Chognfeng</div><div style=3D"border:non=
e;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"><div style=3D"=
PADDING-RIGHT: 8px; PADDING-LEFT: 8px; FONT-SIZE: 12px;FONT-FAMILY:tahoma;=
COLOR:#000000; BACKGROUND: #efefef; PADDING-BOTTOM: 8px; PADDING-TOP: 8px"=
><div><b>From:</b>&nbsp;<a href=3D"mailto:rbonica=3D40juniper.net@dmarc.ie=
tf.org">Ron Bonica</a></div><div><b>Date:</b>&nbsp;2024-05-31&nbsp;03:59</=
div><div><b>To:</b>&nbsp;<a href=3D"mailto:zahed.sarker.ietf@gmail.com">Za=
heduzzaman Sarker</a>; <a href=3D"mailto:bob.hinden@gmail.com">Bob Hinden<=
/a></div><div><b>CC:</b>&nbsp;<a href=3D"mailto:6man-chairs@ietf.org">6man=
 Chairs</a>; <a href=3D"mailto:iesg@ietf.org">IESG</a>; <a href=3D"mailto:=
ipv6@ietf.org">IPv6 List</a>; <a href=3D"mailto:draft-ietf-6man-comp-rtg-h=
dr@ietf.org">draft-ietf-6man-comp-rtg-hdr@ietf.org</a></div><div><b>Subjec=
t:</b>&nbsp;[IPv6]Re: Zaheduzzaman Sarker's Discuss on draft-ietf-6man-com=
p-rtg-hdr-09: (with DISCUSS)</div></div></div><div><div class=3D"FoxDiv202=
40604083653186899">=0A<div class=3D"elementToProof" style=3D"font-family: =
Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-s=
erif; font-size: 11pt; color: rgb(0, 0, 0);">=0Athanks</div>=0A<div id=3D"=
appendonsend"></div>=0A<br>=0A<p style=3D"font-family: Calibri; font-size:=
 7pt; color: rgb(0, 0, 0); margin: 0px 15pt; font-style: normal; font-weig=
ht: normal; text-decoration: none;" align=3D"Center">=0AJuniper Business U=
se Only<br>=0A</p>=0A<hr style=3D"display:inline-block;width:98%" tabindex=
=3D"-1">=0A<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sa=
ns-serif" style=3D"font-size:11pt" color=3D"#000000"><b>From:</b> Zaheduzz=
aman Sarker &lt;zahed.sarker.ietf@gmail.com&gt;<br>=0A<b>Sent:</b> Thursda=
y, May 30, 2024 3:23 PM<br>=0A<b>To:</b> Bob Hinden &lt;bob.hinden@gmail.c=
om&gt;<br>=0A<b>Cc:</b> 6man Chairs &lt;6man-chairs@ietf.org&gt;; IESG &lt=
;iesg@ietf.org&gt;; IPv6 List &lt;ipv6@ietf.org&gt;; Jen Linkova &lt;furry=
13@gmail.com&gt;; draft-ietf-6man-comp-rtg-hdr@ietf.org &lt;draft-ietf-6ma=
n-comp-rtg-hdr@ietf.org&gt;<br>=0A<b>Subject:</b> Re: Zaheduzzaman Sarker'=
s Discuss on draft-ietf-6man-comp-rtg-hdr-09: (with DISCUSS)</font>=0A<div=
>&nbsp;</div>=0A</div>=0A<div>=0A<p style=3D"margin-top: 0px; margin-botto=
m: 0px;"></p>=0A<div style=3D"background-color:#FFEB9C; width:100%; border=
-style:none; border-color:#9C6500; border-width:1pt; padding:2pt; font-siz=
e:10.5pt; line-height:12pt; font-family:'Lato'; color:black; text-align:le=
ft; font-weight:bold">=0A<span style=3D"color:black">[External Email. Be c=
autious of content]</span></div>=0A<br>=0A<p style=3D"margin-top: 0px; mar=
gin-bottom: 0px;"></p>=0A<div>=0A<div dir=3D"auto">Hi Bob, Hi Ron,</div>=
=0A<div dir=3D"auto"><br>=0A</div>=0A<div dir=3D"auto">We discussed this t=
oday during the telechat, and I was made aware of rate limiting property o=
f ICMPv6 by my learned colleagues.&nbsp;</div>=0A<div dir=3D"auto"><br>=0A=
</div>=0A<div dir=3D"auto">We are fine here. No need to add anything in th=
is spec.</div>=0A<div dir=3D"auto"><br>=0A</div>=0A<div dir=3D"auto">I wil=
l clear my discuss.</div>=0A<div dir=3D"auto"><br>=0A</div>=0A<div dir=3D"=
auto">//Zahed</div>=0A<div><br>=0A<div class=3D"x_gmail_quote">=0A<div dir=
=3D"ltr" class=3D"x_gmail_attr">On Thu, 30 May 2024 at 18:11, Bob Hinden &=
lt;<a href=3D"mailto:bob.hinden@gmail.com">bob.hinden@gmail.com</a>&gt; wr=
ote:<br>=0A</div>=0A<blockquote class=3D"x_gmail_quote" style=3D"margin:0 =
0 0 .8ex; border-left:1px #ccc solid; padding-left:1ex">=0A<div style=3D"l=
ine-break:after-white-space">Hi,</div>=0A<div style=3D"line-break:after-wh=
ite-space"><br id=3D"x_m_7207353038905794341lineBreakAtBeginningOfMessage"=
>=0A<div><br>=0A<blockquote type=3D"cite" style=3D"margin-top: 0px;">=0A<d=
iv>On May 30, 2024, at 4:42=E2=80=AFAM, Zaheduzzaman Sarker via Datatracke=
r &lt;<a href=3D"mailto:noreply@ietf.org" target=3D"_blank">noreply@ietf.o=
rg</a>&gt; wrote:</div>=0A<br>=0A<div>=0A<div>Zaheduzzaman Sarker has ente=
red the following ballot position for<br>=0Adraft-ietf-6man-comp-rtg-hdr-0=
9: Discuss<br>=0A<br>=0AWhen responding, please keep the subject line inta=
ct and reply to all<br>=0Aemail addresses included in the To and CC lines.=
 (Feel free to cut this<br>=0Aintroductory paragraph, however.)<br>=0A<br>=
=0A<br>=0APlease refer to <a href=3D"https://urldefense.com/v3/__https://w=
ww.ietf.org/about/groups/iesg/statements/handling-ballot-positions/__;!!NE=
t6yMaO-gk!G8t5MBxW5X3XZRARdHZgP_DetxiGAv5e-iifMG7Tgue1acxJSs5EiAFdAmbfwk1p=
bms9EY-uGUOGYKeU6i6F12C3WvA$" target=3D"_blank">=0Ahttps://www.ietf.org/ab=
out/groups/iesg/statements/handling-ballot-positions/</a> <br>=0Afor more =
information about how to handle DISCUSS and COMMENT positions.<br>=0A<br>=
=0A<br>=0AThe document, along with other ballot positions, can be found he=
re:<br>=0A<a href=3D"https://urldefense.com/v3/__https://datatracker.ietf.=
org/doc/draft-ietf-6man-comp-rtg-hdr/__;!!NEt6yMaO-gk!G8t5MBxW5X3XZRARdHZg=
P_DetxiGAv5e-iifMG7Tgue1acxJSs5EiAFdAmbfwk1pbms9EY-uGUOGYKeU6i6Fop3SWo4$" =
target=3D"_blank">https://datatracker.ietf.org/doc/draft-ietf-6man-comp-rt=
g-hdr/</a><br>=0A<br>=0A<br>=0A-------------------------------------------=
---------------------------<br>=0ADISCUSS:<br>=0A-------------------------=
---------------------------------------------<br>=0A<br>=0AThanks for work=
ing on this specification.&nbsp; Special Thanks to Gorry Fairhurst<br>=0Af=
or the TSVART review.<br>=0A<br>=0AI have one question that I would like t=
o discuss further to understand better -<br>=0A<br>=0A- In the processing =
rules, we are seding ICMPv6 Messages so how often are we<br>=0Asending the=
m? if this is not rate limited, what are the risks we are not<br>=0Aconsid=
ering here?<br>=0A<br>=0A</div>=0A</div>=0A</blockquote>=0A</div>=0A<br>=
=0A</div>=0A<div style=3D"line-break:after-white-space">=0A<div>Rate limit=
ing of ICMP error message is part of the ICMPv6 specification RFC 4443. &n=
bsp;&nbsp;</div>=0A<div><br>=0A</div>=0A<div>See Section &nbsp;2.4. Messag=
e Processing Rules, subsection (f) of&nbsp;<a href=3D"https://urldefense.c=
om/v3/__https://datatracker.ietf.org/doc/html/rfc4443__;!!NEt6yMaO-gk!G8t5=
MBxW5X3XZRARdHZgP_DetxiGAv5e-iifMG7Tgue1acxJSs5EiAFdAmbfwk1pbms9EY-uGUOGYK=
eU6i6FfJqfU98$" target=3D"_blank">https://datatracker.ietf.org/doc/html/rf=
c4443</a>.</div>=0A<div><br>=0A</div>=0A<div>Routers implement rate limiti=
ng ICMPv6 error messages. &nbsp; &nbsp;Is there something specific about t=
his draft that this needs to be called out?</div>=0A</div>=0A<div style=3D=
"line-break:after-white-space">=0A<div><br>=0A</div>=0A<div>Bob</div>=0A<d=
iv><br>=0A</div>=0A<div><br>=0A</div>=0A<div><br>=0A</div>=0A<div><br>=0A<=
/div>=0A<div><br>=0A</div>=0A<div><br>=0A</div>=0A</div>=0A</blockquote>=
=0A</div>=0A</div>=0A</div>=0A</div>=0A</div></div></blockquote>=0A</body>=
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