Permanent residents with less than 2 years of presence in Australia and who have not established a significant link of interest with Australia may be eligible for a three-month RRV. For example, you may have moved to Australia when you are nearing the end of your migration travel service and need to travel abroad before you can establish important connections. As above, if you stay in Australia beyond the 3-month validity period, your permanent residency does not expire, only your ability to leave and then re-enter Australia as a permanent resident is affected.
https://fbpinternational.tumblr.com/post/724453256909258752/fbp-international-resident-return-visas
