commit ae925404a10bf0ea63d6e8d41e3821f68b4d776c

Author: Aurelien Jarno <aurelien@aurel32.net>

Date:   Fri Sep 3 00:28:14 2021 +0200

    Fix failing nss/tst-nss-files-hosts-long with local resolver

    When a local resolver like unbound is listening on the IPv4 loopback

    address 127.0.0.1, the nss/tst-nss-files-hosts-long test fails. This is

    due to:

    - the default resolver in the absence of resolv.conf being 127.0.0.1

    - the default DNS NSS database configuration in the absence of

      nsswitch.conf being 'hosts: dns [!UNAVAIL=return] file'

    This causes the requests for 'test4' and 'test6' to first be sent to the

    local resolver, which responds with NXDOMAIN in the likely case those

    records do no exist. In turn that causes the access to /etc/hosts to be

    skipped, which is the purpose of that test.

    Fix that by providing a simple nsswitch.conf file forcing access to

    /etc/hosts for that test. I have tested that the only changed result in

    the testsuite is that test.

    (cherry picked from commit 2738480a4b0866723fb8c633f36bdd34a8767581)

diff --git a/nss/tst-nss-files-hosts-long.root/etc/nsswitch.conf b/nss/tst-nss-files-hosts-long.root/etc/nsswitch.conf

new file mode 100644

index 0000000000000000..5b0c6a419937a013

--- /dev/null

+++ b/nss/tst-nss-files-hosts-long.root/etc/nsswitch.conf

@@ -0,0 +1 @@

+hosts: files