from log
Feb 23 21:52:34.166 [info] connection_edge_reached_eof(): conn (fd 27) reached eof. Closing.
Feb 23 21:52:34.177 [info] connection_edge_process_relay_cell(): 26: end cell (closed normally) for stream 23297. Removing stream.
Feb 23 21:52:35.617 [info] consider_testing_reachability(): Testing reachability of my ORPort: 129.21.147.187:9001.
Feb 23 21:52:35.617 [info] onion_pick_cpath_exit(): Using requested exit node 'tehonionrouter'
Feb 23 21:52:35.618 [info] compute_preferred_testing_list(): Looking for middle server that doesn't have the reachability bug, and chose 'hppie'. Great.
Feb 23 21:52:35.631 [info] circuit_send_next_onion_skin(): First hop: finished sending CREATE cell to 'MrServer'
Feb 23 21:52:35.631 [info] routerstatus_list_update_from_networkstatus(): Rebuilding router status list.
Feb 23 21:52:35.634 [err] buffers.c:1441: assert_buf_ok: Assertion u32 == END_MAGIC failed; aborting.


#0  0xb7f9b410 in ?? ()
#1  0xbfe186dc in ?? ()
#2  0x00000006 in ?? ()
#3  0x00003209 in ?? ()
#4  0xb7cfa651 in raise () from /lib/libc.so.6
#5  0xb7cfbca9 in abort () from /lib/libc.so.6
#6  0x0804c9d1 in assert_buf_ok (buf=0x82d8d80) at buffers.c:1432
#7  0x080677d7 in assert_connection_ok (conn=0x81653c8, now=1172285555)
    at connection.c:2403
#8  0x080957ef in conn_write_callback (fd=30, events=4, _conn=0x81653c8)
    at main.c:453
#9  0xb7df4332 in event_base_loop () from /usr/lib/libevent-1.1a.so.1
#10 0xb7df4549 in event_loop () from /usr/lib/libevent-1.1a.so.1
#11 0xb7df456e in event_dispatch () from /usr/lib/libevent-1.1a.so.1
#12 0x08095537 in tor_main (argc=3, argv=0xbfe18b64) at main.c:1261
#13 0x080b8c22 in main (argc=Cannot access memory at address 0x3209
) at tor_main.c:22