dhcpd root-path option?

From:	Ilkka Tengvall <ilkka dot tengvall at iki dot fi>
To:	m0n0wall at lists dot m0n0 dot ch
Subject:	dhcpd root-path option?
Date:	Thu, 16 Aug 2012 15:26:51 +0300

how to enable such option in dhcpd in monowall? It's not in the gui,
is  there any hidden way to do that? It's needed for the nfs boot
clients in the network.