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Make IPv4-mapped support optional and embedded support obligatory #362

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Apr 12, 2022
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Make IPv4-mapped support optional and embedded support obligatory #362

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538d328
Forbid IPv6 in IPv4-mapped addresses
DesWurstes Feb 22, 2022
ce04c48
Allow mapped and keep embedded v4 obligatory
DesWurstes Feb 22, 2022
5fc71b9
Wording
DesWurstes Feb 22, 2022
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10 changes: 5 additions & 5 deletions draft-ietf-dnsop-svcb-https.md
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Original file line number Diff line number Diff line change
Expand Up @@ -1924,23 +1924,23 @@ long, it is broken into several lines.
\x00\x00\x00\x00\x00\x53\x00\x01 # second address
{: title="Two quoted IPv6 hints"}

example.com. SVCB 1 example.com. ipv6hint="::ffff:198.51.100.100"
example.com. SVCB 1 example.com. ipv6hint="2001:db8:122:344::192.0.2.33"

\# 35 (
00 01 ; priority
07 65 78 61 6d 70 6c 65 03 63 6f 6d 00 ; target
00 06 ; key 6
00 10 ; length 16
00 00 00 00 00 00 00 00 00 00 ff ff c6 33 64 64 ; address
20 01 0d b8 01 22 03 44 00 00 00 00 c0 00 02 21 ; address
)

\x00\x01 # priority
\x07example\x03com\x00 # target
\x00\x06 # key 6
\x00\x10 # length 16
\x00\x00\x00\x00\x00\x00\x00\x00
\x00\x00\xff\xff\xc6\x33\x64\x64 # address
{: title="An IPv6 hint in IPv4-mapped format "}
\x20\x01\x0d\xb8\x01\x22\x03\x44
\x00\x00\x00\x00\xc0\x00\x02\x21 # address
{: title="An IPv6 hint using the embedded IPv4 syntax"}

example.com. SVCB 16 foo.example.org. (
alpn=h2,h3-19 mandatory=ipv4hint,alpn
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