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Date:      Thu, 12 Feb 2026 20:26:53 +0000
From:      bugzilla-noreply@freebsd.org
To:        testing@FreeBSD.org
Subject:   [Bug 293152] sys/netinet6/ndp:ndp_prefix_lifetime_extend test fails intermittently in CI
Message-ID:  <bug-293152-32464@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=293152

            Bug ID: 293152
           Summary: sys/netinet6/ndp:ndp_prefix_lifetime_extend test fails
                    intermittently in CI
           Product: Base System
           Version: 16.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Keywords: regression
          Severity: Affects Only Me
          Priority: ---
         Component: tests
          Assignee: markj@FreeBSD.org
          Reporter: siva@FreeBSD.org
                CC: testing@FreeBSD.org

The 'sys/netinet6/ndp:ndp_prefix_lifetime_extend' testcase fails intermittently
in CI:


===> sys/netinet6/ndp:ndp_prefix_lifetime_extend 
Result:     failed: Expiry time was shortened: 20 <= 19 
Start time: 2026-02-12T13:09:17.920857Z 
End time:   2026-02-12T13:09:18.007189Z 
Duration:   0.086s

Standard output: 
Executing command [ ifconfig epair create ] 
Executing command [ ifconfig epair0a up ] 
Executing command [ ifconfig epair0a inet6 2001:db8:ffff:1000::1/64 pltime 5
vltime 10 ] 
Executing command [ ifconfig epair0a inet6 2001:db8:ffff:1000::1/64 pltime 10
vltime 20 ] 
Executing command [ ifconfig epair0a inet6 2001:db8:ffff:1000::2/64 pltime 5
vltime 10 ] 

Standard error: 
Files left in work directory after failure: epair


I have reproduced this error using Bricoler with 100 runs for good measure and
attached the failing test report in this bug:

$ bricoler run freebsd-src-regression-suite --param freebsd-src:url=/usr/src
--param freebsd-src:branch= --param
freebsd-src-regression-suite:hypervisor=bhyve --param
freebsd-src-regression-suite:memory=4096 --param
freebsd-src-regression-suite:ncpus=2 --param
freebsd-src-regression-suite:parallelism=1 --param
freebsd-src-regression-suite:count=100 --param
freebsd-src-regression-suite:tests='sys/netinet6/ndp:ndp_prefix_lifetime_extend'

@markj, since you added the tests in
https://cgit.freebsd.org/src/commit/?id=74999aac5effb9b32d12f413ef51e87b15c8a0d8
(in6: Modify address prefix lifetimes when updating address lifetimes), please
triage as necessary.

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