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net: TestLookupCNAME sometimes failing on Plan 9 #21335

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0intro opened this issue Aug 7, 2017 · 1 comment
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net: TestLookupCNAME sometimes failing on Plan 9 #21335

0intro opened this issue Aug 7, 2017 · 1 comment
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FrozenDueToAge OS-Plan9
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Go1.10

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0intro commented Aug 7, 2017 •
edited

Sometimes, TestLookupCNAME is failing on Plan 9.

--- FAIL: TestLookupCNAME (0.24s)
	lookup_test.go:266: write /net/dns: dns: resource does not exist; negrcode 0
FAIL
FAIL	net	19.087s

Indeed, resolving an nonexistent CNAME can result in either the "dns failure" or the "resource does not exist" error. This behavior can be reproduced with ndb/dnsquery:

cpu% ndb/dnsquery
> www.iana.org cname
www.iana.org cname	ianawww.vip.icann.org
> www.iana.org. cname
www.iana.org cname	ianawww.vip.icann.org
> www.google.com cname
!dns: dns failure
> www.google.com cname
!dns: dns failure
> www.google.com cname
!dns: dns failure
> google.com
google.com ip	216.58.198.206
> www.google.fr cname
!dns: resource does not exist; negrcode 0
> www.google.fr cname
!dns: resource does not exist; negrcode 0
>

This is related to (closed) issue #18391.
@0intro 0intro added the OS-Plan9 label Aug 7, 2017
@0intro 0intro added this to the Go1.10 milestone Aug 7, 2017
@0intro 0intro self-assigned this Aug 7, 2017
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Change https://golang.org/cl/53670 mentions this issue: net: fix LookupCNAME on Plan 9

@golang golang locked and limited conversation to collaborators Aug 8, 2018
@rsc rsc unassigned 0intro Jun 23, 2022
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