There is another report resolving a wrong address from SMB share (without mediaportal): SMB broken in nightlies RPI4
Samba is doing it's own name resolution and in the last post OP found the address listed in nmblookup. Please try nmblookup NCC and nmblookup -A 172.20.208.1.
BTW: nslookup is only querying DNS servers while the system library name resolution is using the methods defined in /etc/nsswitch.conf. For hosts these are usually files (->/etc/hosts). MDNS and DNS. This can be queries with the getent ahosts ... command mentioned.
Here is another log from LE 9.95 (Allwinner H6) when pvr.mediaportal is configured to use RTSP instead of SMB:
RTSP failing too makes the error even more mysterious to me - maybe caused by caching of addresses.
Comparing LE 9.2.6 with 9.95 does not help, almost every part was upgraded.