### DMZ

#                                    
#                               opeth grave 
#                                 |    |
#                                [s1] [s4]
#                                  \   /
#                                 immortal
#                                  /   \
#                                [s2]  [s3]
#                                /  \   |
#                              syl  dt nile
# 

SWITCH s1
SWITCH s2   
SWITCH s3   
SWITCH s4   
HOST debian  immortal s1 s2 s3 s4
HOST debian  opeth    s1       
HOST debian  syl      s2
HOST debian  dt       s2
HOST debian  nile     s3
HOST debian  grave    s4