Fixed expiration code to actually work; however, there seems to be yet another bug somewhere (long-lived elsa_stress runs cause multiple IPv4 addresses to pop up on interface).
Put eliminate_other_lap to 'correct' places, and got rid of duplicate address reuse logic.
Some code refactoring just for fun - got rid of :values() calls, and ton of iid arguments by adding liid field for remote ASPs' local iids to asp class.
There was semi-broken assumption about how reuse works. Addressed it => no more address flapping(?), as we allow re-use of old addresses if they're for appropriate prefix and we are the one with right to choose the address anyway.