Hi all,
I have to initiate the NFS and Bootp Service in the SquashFS mode itself as I wanted to disconnect the network and install by looping back (lo part of ethernet) for couple of VM's which I will be creating in our machine
I am trying this in CentOS 7.3 Kernel 3.10.0-693


But while I am starting the NFS service I am getting the following error

Oct 14 09:55:18 testNova systemd[1]: Job nfs-idmapd.service/start failed with result 'dependency'.
Oct 14 09:55:18 testNova systemd[1]: Job nfs-server.service/start failed with result 'dependency'.
Oct 14 09:55:18 testNova systemd[1]: Job nfs-mountd.service/start failed with result 'dependency'.
Oct 14 09:55:18 testNova systemd[1]: Unit proc-fs-nfsd.mount entered failed state.

[anaconda root@testNova tftpboot]# systemctl start nfs-server.service
A dependency job for nfs-server.service failed. See 'journalctl -xe' for details.
[anaconda root@testNova tftpboot]# journalctl -xe
-- Subject: Unit nfs-idmapd.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman.../systemd-devel
--
-- Unit nfs-idmapd.service has failed.
--
-- The result is dependency.
Oct 14 09:55:18 testNova systemd[1]: Job nfs-idmapd.service/start failed with result 'dependency'.
Oct 14 09:55:18 testNova systemd[1]: Job nfs-server.service/start failed with result 'dependency'.
Oct 14 09:55:18 testNova systemd[1]: Job nfs-mountd.service/start failed with result 'dependency'.
Oct 14 09:55:18 testNova systemd[1]: Unit proc-fs-nfsd.mount entered failed state.
Oct 14 09:55:18 testNova systemd[1]: Started Preprocess NFS configuration.
-- Subject: Unit nfs-config.service has finished start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman.../systemd-devel
--
-- Unit nfs-config.service has finished starting up.
--
-- The start-up result is done.
Oct 14 09:55:18 testNova systemd[1]: Starting Notify NFS peers of a restart...
-- Subject: Unit rpc-statd-notify.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman.../systemd-devel
--
-- Unit rpc-statd-notify.service has begun starting up.
Oct 14 09:55:18 testNova polkitd[9062]: Unregistered Authentication Agent for unix-process:130821:7516257 (system bus name :1.21, object path /org/freedesktop/PolicyK
Oct 14 09:55:18 testNova sm-notify[130834]: Version 1.3.0 starting
Oct 14 09:55:18 testNova sm-notify[130834]: Already notifying clients; Exiting!
Oct 14 09:55:18 testNova systemd[1]: Started Notify NFS peers of a restart.
-- Subject: Unit rpc-statd-notify.service has finished start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman.../systemd-devel
--
-- Unit rpc-statd-notify.service has finished starting up.
--
-- The start-up result is done.

As you've been asked before, post code/output in CODE tags to make things easy to read. And your post makes almost no sense; you want to disconnect the network, THEN start NFS?? You do realize the N in NFS stands for "Network", right? And did you try to look up the error you're getting? It's telling you that the NFS service can't start, because of a missing dependency service. Chances are, RPC.