Bug 1950308
| Summary: | Resolv::DNS: ruby:2.5/ruby: timeouts if multiple IPv6 name servers are given and address contains leading zero [rhel-8] | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | Vít Ondruch <vondruch> | |
| Component: | ruby | Assignee: | Pavel Valena <pvalena> | |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Jan Houska <jhouska> | |
| Severity: | unspecified | Docs Contact: | ||
| Priority: | unspecified | |||
| Version: | 8.3 | CC: | djez, jhouska, pvalena | |
| Target Milestone: | rc | Keywords: | Triaged, ZStream | |
| Target Release: | --- | Flags: | pm-rhel:
mirror+
|
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| Hardware: | Unspecified | |||
| OS: | Unspecified | |||
| Whiteboard: | ||||
| Fixed In Version: | ruby-2.5.9-107.module+el8.4.0+10822+fe4fffb1 | Doc Type: | No Doc Update | |
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 1955010 (view as bug list) | Environment: | ||
| Last Closed: | 2021-12-16 11:54:57 UTC | Type: | Bug | |
| Regression: | --- | Mount Type: | --- | |
| Documentation: | --- | CRM: | ||
| Verified Versions: | Category: | --- | ||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | ||
| Cloudforms Team: | --- | Target Upstream Version: | ||
| Embargoed: | ||||
| Bug Depends On: | ||||
| Bug Blocks: | 1916404, 1955010 | |||
VERIFIED Test PASS on 1minutetip for: Version: ruby-2.5.9-107.module+el8.4.0+10822+fe4fffb1 :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: :: Test :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: :: [ 08:08:42 ] :: [ INFO ] :: using '/var/tmp/beakerlib-147847001/backup' as backup destination :: [ 08:08:42 ] :: [ LOG ] :: rlServiceStart: Service named started successfully :: [ 08:08:42 ] :: [ PASS ] :: Run reproducer (Expected 0, got 0) :: [ 08:08:42 ] :: [ PASS ] :: File 'output.txt' should contain '127.0.0.1' :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: :: Duration: 1s :: Assertions: 2 good, 0 bad :: RESULT: PASS (Test) Package version in nightly: ruby-2.5.9-107.module+el8.4.0+10822+fe4fffb1.src.rpm http://download.eng.brq.redhat.com/rhel-8/nightly/RHEL-8/RHEL-8.5.0-20210722.n.3/compose/AppStream/source/tree/Packages/ruby-2.5.9-107.module+el8.4.0+10822+fe4fffb1.src.rpm |
Description of problem: Resolv::DNS does not return any results under those conditions: there are at least two name servers (in /etc/resolv.conf). The name servers have IPv6 addresses containing leading zeros. Example resolv.conf: nameserver 2001:0db8::0001:1 nameserver 2001:0db8::0002:1 This is caused by a mismatch in representation of the address: Requester::sender_for compares the address of the answering server (e.g. 2001:0db8::1:1) with the address the request was sent to (e.g. 2001:0db8::0001:1). Version-Release number of selected component (if applicable): ruby-libs-2.5.5-105.module+el8.1.0+3656+f80bfa1d.x86_64 How reproducible: We reproduced this by running puppet_facts on OSP 16.1 Steps to Reproduce: You can see the difference in timing when the ipa facts are pre-populated (the DNS lookup is skipped) or not: [root@]# time FACTER_ipa_domain='' FACTER_ipa_server='' puppet facts >/dev/null real 0m2.367s user 0m1.746s sys 0m0.392s [root@]# time puppet facts >/dev/null real 1m22.435s user 0m1.735s sys 0m0.428s Additional info: See https://bugzilla.redhat.com/show_bug.cgi?id=1916404 This was fixed in https://bugs.ruby-lang.org/issues/16439