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Johnathan Corgan
b33d6531ce
The fips-dns.service unit had three issues: 1. Wants=systemd-resolved.service caused systemd to start systemd-resolved on systems that weren't using it, breaking existing DNS by rewriting /etc/resolv.conf to the stub resolver at 127.0.0.53. 2. The ExecStart busy-wait loop for fips0 had no timeout, hanging forever if fips.service failed to create the TUN device. 3. Installers unconditionally enabled fips-dns.service regardless of whether systemd-resolved was present. Fix by replacing Wants= with ConditionPathExists=/run/systemd/resolve (skips cleanly if resolved isn't running), adding Requires=fips.service (won't start without the daemon), bounding the fips0 wait loop to 30 seconds, and making the installers conditional on systemd-resolved being active.