You are a permanent resident who can provide a Department of Immigration and Citizenship (DIAC) receipt to prove you have applied for Australian citizenship. (A permanent resident is generally eligible to apply for citizenship after two years. A permanent resident married to an Australian can apply immediately); or
You are a permanent resident who is not eligible to apply for Australian citizenship but are prepared to sign an undertaking to apply after completing at least 3 months service in the ADF or at least 6 months part-time service in the ADF Reserve. (Permanent residents become eligible to apply for citizenship on completion of 3 months service in the ADF or 6 months part-time service in the ADF Reserve).