Hi! Here is the information you asked for.
I colud not find a nslookup command!
Hope this can help you help me! :-)
Anders
$ who am i
anwi pts/5 okt 5 17:28 (192.168.43.34)
$ nslookup 192.168.43.34
nslookup: not found
$ cat /etc/nsswitch.conf
#
# /etc/nsswitch.
dns:
#
# An example file that could be copied over to /etc/nsswitch.conf; it uses
#
DNS for hosts lookups, otherwise it does not use any other naming service.
#
# "hosts:" and "services:" in this file are used only if the
# /etc/netconfig file has a "-" for nametoaddr_libs of "inet" transports.
passwd: files
group: files
# You must also set up the /etc/resolv.conf file for
DNS name
# server lookup. See resolv.conf(4).
hosts: files
dns
ipnodes: files
# Uncomment the following line and comment out the above to resolve
# both IPv4 and IPv6 addresses from the ipnodes databases. Note that
# IPv4 addresses are searched in all of the ipnodes databases before
# searching the hosts databases. Before turning this option on, consult
# the Network Administration Guide for more details on using IPv6.
#ipnodes: files
dns
networks: files
protocols: files
rpc: files
ethers: files
netmasks: files
bootparams: files
publickey: files
# At present there isn't a 'files' backend for netgroup; the system will
# figure it out pretty quickly, and won't use netgroups at all.
netgroup: files
automount: files
aliases: files
services: files
sendmailvars: files
printers: user files