Package(/NAS application) "DNS Server" needs PORT 53 to run, so it can run while installing Package, "Synology Directory Server" But Port 53 is taken - I never deal with ports, is this
Amazon.com: Synology DiskStation DS1621xs+ NAS Server with Xeon 2.2GHz CPU, 32GB Memory, 108TB HDD Storage, 1TB M.2 NVMe SSD, 1 x 10GbE LAN Port, DSM Operating System : Electronics
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