net: TestCgoLookupCNAME failures

[gopherbot]

#!watchflakes
default <- pkg == "net" && test == "TestCgoLookupCNAME"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestCgoLookupCNAME
    cgo_unix_test.go:77: res_nsearch failure
--- FAIL: TestCgoLookupCNAME (10.00s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "net" && test == "TestCgoLookupCNAME"

2025-11-24 18:22 gotip-solaris-amd64 go@2a185fae net.TestCgoLookupCNAME (log)

=== RUN   TestCgoLookupCNAME
    cgo_unix_test.go:77: res_nsearch failure
--- FAIL: TestCgoLookupCNAME (10.00s)

2025-11-27 04:07 gotip-solaris-amd64 go@9f5cd43f net.TestCgoLookupCNAME (log)

=== RUN   TestCgoLookupCNAME
    cgo_unix_test.go:77: res_nsearch failure
--- FAIL: TestCgoLookupCNAME (10.01s)

— watchflakes