229-4ubuntu19 # systemd-resolve www.gnu.org.. www.gnu.org..: 208.118.235.148 2001:4830:134:3::a (www.gnu.org)
-- Information acquired via protocol DNS in 1.8ms. -- Data is authenticated: no Which is BAD. 229-4ubuntu20 # systemd-resolve www.gnu.org.. www.gnu.org..: resolve call failed: Invalid hostname 'www.gnu.org..' Which is GOOD and standards compliant. ** Tags removed: verification-needed verification-needed-xenial ** Tags added: verification-done verification-done-xenial -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1600000 Title: libnss-resolve treats two trailing dots on a domain name incorrectly Status in systemd: New Status in systemd package in Ubuntu: Fix Released Status in systemd source package in Xenial: Fix Committed Bug description: [Impact] libnss-resolve is an optional component not used by default in xenial. However it treats doubledot incorrectly, meaning it gets resolved when it shouldn't. [Fix] Cherrypick upstream patch to resolve this issue. [Testcase] * Enable resolve nss module * attempt resolving www.gnu.org.. * It should fail to resolve (base)adconrad@nosferatu:~$ getent ahostsv4 www.gnu.org.. 208.118.235.148 STREAM wildebeest.gnu.org 208.118.235.148 DGRAM 208.118.235.148 RAW (base)adconrad@nosferatu:~$ sudo sed -i -e 's/ resolve dns/ dns/' /etc/nsswitch.conf (base)adconrad@nosferatu:~$ getent ahostsv4 www.gnu.org.. (base)adconrad@nosferatu:~$ sudo sed -i -e 's/ dns/ resolve dns/' /etc/nsswitch.conf (base)adconrad@nosferatu:~$ getent ahostsv4 www.gnu.org.. 208.118.235.148 STREAM wildebeest.gnu.org 208.118.235.148 DGRAM 208.118.235.148 RAW (base)adconrad@nosferatu:~$ This is responsible for the new regression in glibc: ---------- FAIL: posix/tst-getaddrinfo5 original exit status 1 resolving "localhost." worked, proceeding to test resolving "localhost.." failed, test passed resolving "www.gnu.org." worked, proceeding to test resolving "www.gnu.org.." worked, test failed ---------- [Regression potential] Minimal, since this component is not used by default. However, systems that have this enabled exhibit standards non-compliant behavior. It is not expected for anybody to depend on this broken behavior. To manage notifications about this bug go to: https://bugs.launchpad.net/systemd/+bug/1600000/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp