Hi,
tc@box:/tmp/tcloop/tcpdump/usr/local/sbin$ ls -l
total 632
lrwxrwxrwx 1 root root 13 Nov 26 07:16 tcpdump -> tcpdump.4.4.0
-rwxr-xr-x 1 root root 647004 Nov 26 07:16 tcpdump.4.5.1
Symlink tcpdump points to wrong version. See above.
Edit: piCore 5.1 rc4
Cheers,
Patrick