### fw3 dup-append leak
        IPFW3_TABLE       6   10.5K       0    390M        6
        IPFW3_TABLE   58.6K   7.34M       0    390M    58.6K
table 2 type ip count 1
10.7.7.7/32 
### lacp mcast leak
--- create tap0 + lacp lagg0 + add port
        ether_multi      30   1.40K       0    390M       45
--- after laggport:
        ether_multi      32   1.51K       0    390M       47
--- remove port (-laggport):
        ether_multi      32   1.51K       0    390M       47
--- re-add port (should be refcount++ only, no new membership):
--- remove again:
--- destroy lagg, destroy tap0:
        ether_multi      32   1.51K       0    390M       47
=== PF_ROUTE membership events ===
listening 22s for RTM_NEWMADDR/RTM_DELMADDR...
NEWMADDR: ifindex=3 74:61:70:30:00:bd
### quantified: 20 cycles
        ether_multi      32   1.51K       0    390M       47
        ether_multi      72   3.70K       0    390M       87