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489e38fd2c
This patch fixes a regression [1] introduced in ntpd 4.2.8p18 [2]. ntpd[200]: Listen normally on 3 lo [::1]:123 ntpd[200]: bind(20) AF_INET6 [fe80::bf3d:254d:dee0:d345%3]:123 flags 0x811 failed: Cannot assign requested address ntpd[200]: unable to create socket on enp0s3 (4) for [fe80::bf3d:254d:dee0:d345%3]:123 ntpd[192]: daemon control: got EOF ntpd[192]: daemon child died with signal 11 systemd[1]: ntpd.service: Control process exited, code=exited, status=70/SOFTWARE systemd[1]: ntpd.service: Failed with result 'exit-code'. systemd[1]: Failed to start Network Time Service. If the IPv6 link-local interface was not ready for binding on the first attempt, ntpd would segfault in update_interfaces(). The segfault would only occur when ntpd was started as part of the boot sequence. Most - but not all - boots were affected. Evidently it could happen that the timing of ntpd's start up was delayed enough that the IPv6 link-local interface was ready for the bind() call when it was first issued by open_socket() via create_interface(). [1]: https://bugs.ntp.org/show_bug.cgi?id=3928 [2]: https://bugs.ntp.org/show_bug.cgi?id=3913 Signed-off-by: TIAN Yuanhao <tianyuanhao3@163.com> Cc: Bernd Kuhls <bernd.kuhls@t-online.de> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>