$ type netconfig
netconfig is /usr/sbin/netconfig

$ file /usr/sbin/netconfig
/usr/sbin/netconfig: ELF 32-bit LSB executable, Intel 80386, version 1, dynamically linked (uses shared libs), stripped

Netconfig will ask a series of questions of network configuration(no card).

netconf is actually a symbolic link to linuxconf, which limits linuxconf for only network configuaration task (card & env).

$ type netconf
netconf is /sbin/netconf

$ ls /sbin/netconf
lrwxrwxrwx    1 root     root  /sbin/netconf -> linuxconf*