remove variables NETMASK,BROADCAST and usage of moreutils

lib/get-boot-info

@@ -5,7 +5,7 @@
 # bootinfo -- get boot information via DHCP protocol
 #
 # This script is part of FAI (Fully Automatic Installation)
-# (c) 2003-2019 by Thomas Lange, lange@informatik.uni-koeln.de
+# (c) 2003-2021 by Thomas Lange, lange@informatik.uni-koeln.de
 # Universitaet zu Koeln
 #
 #*********************************************************************
@@ -77,18 +77,16 @@ setnet() {
 
     # only write info if interface is known
     if [ -n "$NIC1" ]; then
-	read IPADDR NETMASK BROADCAST dummy<<<$(ifdata -p $NIC1)
-	CIDR=$(ip -o -f inet addr show| awk '{print $4}'| grep $IPADDR)
+	CIDR=$(ip --br ad sh $NIC1|awk '{print $3}')
+	IPADDR=${CIDR%/*}
 	GATEWAYS=$(ip route | awk '/^default/ {print $3}')
 
 	cat >> $bootlog <<-EOF
+	NIC1=$NIC1
 	IPADDR=$IPADDR
-	SERVER=$SERVER
-	NETMASK=$NETMASK
-	GATEWAYS=$GATEWAYS
-	BROADCAST=$BROADCAST
 	CIDR=$CIDR
-	NIC1=$NIC1
+	GATEWAYS=$GATEWAYS
+	SERVER=$SERVER
 EOF
     fi