Router at main *office* storelist



192.168.1.1	i101
192.168.2.1	i102



No problem here ^^^^^





Router at the *stores*,  storelist


172.16.11.1	office


but there is no officewu1 or officewu2  then next four lines are the same as the main router

i101wu1
i101wu2
i101tt1
i101tt2