Hello, Cause untagged sub-interface does not support in OSPF routing from v4.1.5. If I have that configuration usage in firmware before v4.1.5 (v4.1.1). What is the right way to configure OSPF area interface, if I want to keep IP address(subnet) of that sub-interface to be re-distributed in OSPF routing table? Now, I use Loopback sub-inteface instead, cause loopback interface can only add one IP per interface(x.x.x.x/32), if my previous untagged sub-interface has subnet-mask is 24, I need to add 254 loopback sub-interfaces. Is it correct? Thanks, Adisorn
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