On Fedora 24, there is
[hjl@gnu-6 ~]$ ls -l /etc/resolv.conf
lrwxrwxrwx 1 root root 35 Nov 30 11:44 /etc/resolv.conf -> /var/run/NetworkManager/resolv.conf
Before NetworkManager starts DHCP, /var/run/NetworkManager/resolv.conf
doesn't exist and the content of /etc/resolv.conf may change over time.
But __res_maybe_init never checks if /etc/resolv.conf changes. When a
daemon process starts before DHCP or /var/run/NetworkManager/resolv.conf
is changed by DHCP, the daemon process gets the wrong DNS results.
*** This bug has been marked as a duplicate of bug 984 ***