Flagging this as wont fix as heartbeat is already being kept just for historical reasons (and systemd-networkd can workaround that by the fix we're backporting to it: KeepConfiguration .service file stanza).
Flagging this as wont fix as heartbeat is already being kept just for historical reasons (and systemd-networkd can workaround that by the fix we're backporting to it: KeepConfiguration .service file stanza).