=== DF-4659: sc_ifbuf leak across down/up cycles (mtu 65535) ===
             devbuf     220    282K       0    390M      237
             devbuf     235   1.27M       0    390M      312
=== DF-4658: lpoutput resurrects IFF_RUNNING while DOWN ===
route: writing to routing socket: File exists
add host 10.99.0.2: gateway lp0: File exists
--- state after down (note: no RUNNING expected) ---
lp0: flags=808810<POINTOPOINT,SIMPLEX,MULTICAST,PROXY> metric 0 mtu 65535
RESULT: n=1 size=1400 dst=10.99.0.2 TOTAL=0.1 ms AVG=0.1 ms MAX=0.1 ms
--- state after ONE unprivileged packet to the DOWN interface ---
lp0: flags=808850<POINTOPOINT,RUNNING,SIMPLEX,MULTICAST,PROXY> metric 0 mtu 65535
--- now bring up again: SIOCSIFFLAGS sees RUNNING already set ---
lp0: flags=808811<UP,POINTOPOINT,SIMPLEX,MULTICAST,PROXY> metric 0 mtu 65535
delete host 10.99.0.2