How to combine awk and if in bash

I have 2 text file named as newport and panel port shown below. My awk command combines two files according to their common line to port.txt. I want also not common lines in the new file described in mypurpose. I couldn't combine awk and if or another |awk command.

awk -F' ' 'FNR==NR{a[$1]=$2; next} {print $1,a[$1]}' newport.txt panelport.txt > port.txt

newport

LTECD11L 444

panelport

ENODEB1513L #
ENODEB1521L #
ENODEB1522L #
ENODEB1532L #
ENODEB1533L #
LTECD11L #
LTECD12L #
LTECD14L #
L650112L #
LTEG211L_1 #
LTEG212L_1 #
NodeB1213L #
NodeB1214L #
ENODEB1612L #
ENODEB1614L #
ENODEB1617L #
NodeB1113L #
NodeB1114L #
BB663011L #
BB663012L #

port

ENODEB1513L 
ENODEB1521L 
ENODEB1522L 
ENODEB1532L 
ENODEB1533L 
LTECD11L 444
LTECD12L 
LTECD14L 
L650112L 
LTEG211L_1 
LTEG212L_1 
NodeB1213L 
NodeB1214L 
ENODEB1612L 
ENODEB1614L 
ENODEB1617L 
NodeB1113L 
NodeB1114L 
BB663011L 
BB663012L 

mypurpose

ENODEB1513L #
ENODEB1521L #
ENODEB1522L #
ENODEB1532L #
ENODEB1533L #
LTECD11L 444
LTECD12L #
LTECD14L #
L650112L #
LTEG211L_1 #
LTEG212L_1 #
NodeB1213L #
NodeB1214L #
ENODEB1612L #
ENODEB1614L #
ENODEB1617L #
NodeB1113L #
NodeB1114L #
BB663011L #
BB663012L #