I confirmed the package "4.2.6.p5+dfsg-3ubuntu8.2" solve the bug in Ubuntu Wily
# With port <123 using ntpdate (without patch) 11 Feb 20:30:09 ntpdate[2348]: no server suitable for synchronization found # With port <123 using ntpdate (including patch) 11 Feb 20:32:18 ntpdate[3243]: adjust time server 10.10.10.107 offset 0.002017 sec Eric ** Tags added: verification-done-wily -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to ntp in Ubuntu. https://bugs.launchpad.net/bugs/1479652 Title: [patch] ntpd rejects source UDP ports less than 123 as bogus To manage notifications about this bug go to: https://bugs.launchpad.net/ntp/+bug/1479652/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs