I was trying to run the automatic update but it tries to contact a private IP address based repository:
E: Failed to fetch http://172.16.4.19:82/JingOS/neon/./amd64/libplymouth5_0.9.4git20200323-0ubuntu6.2_amd64.deb Could not connect to 172.16.4.19:82 (172.16.
4.19), connection timed out
Is there a reason for this behavior? Where is a reachable repository located?