I have my main node getting blocks from the seednode, and a backup node being rejected from the same seed. Both nodes updated to last master. This is the log from the one out of sync:
2015-10-09T07:09:26 p2p:dump_node_status_task dump_node_status ] ----------------- PEER STATUS UPDATE -------------------- node.cpp:4644
2015-10-09T07:09:26 p2p:dump_node_status_task dump_node_status ] number of peers: 0 active, 1, 0 closing. attempting to mainta
in 20 - 200 peers node.cpp:4647
2015-10-09T07:09:26 p2p:dump_node_status_task dump_node_status ] handshaking peer 104.236.51.238:2005 in state ours(disconnect
ed) theirs(disconnected) node.cpp:4662
2015-10-09T07:09:26 p2p:dump_node_status_task dump_node_status ] --------- MEMORY USAGE ------------ node
.cpp:4665
2015-10-09T07:09:26 p2p:dump_node_status_task dump_node_status ] node._active_sync_requests size: 0 node.cpp:466
6
2015-10-09T07:09:26 p2p:dump_node_status_task dump_node_status ] node._received_sync_items size: 0 node.cpp:466
7
2015-10-09T07:09:26 p2p:dump_node_status_task dump_node_status ] node._new_received_sync_items size: 0 node
.cpp:4668
2015-10-09T07:09:26 p2p:dump_node_status_task dump_node_status ] node._items_to_fetch size: 0 node.cpp:466
9
2015-10-09T07:09:26 p2p:dump_node_status_task dump_node_status ] node._new_inventory size: 0 node.cpp:467
0
2015-10-09T07:09:26 p2p:dump_node_status_task dump_node_status ] node._message_cache size: 0 node.cpp:467
1
2015-10-09T07:09:26 p2p:dump_node_status_task dump_node_status ] --------- END MEMORY USAGE ------------ node
.cpp:4681
2015-10-09T07:09:32 p2p:terminate_inactive_connections_loop terminate_inactive_c ] Forcibly disconnecting from handshaking peer 104.
236.51.238:2005 due to inactivity of at least 5 seconds node.cpp:1339
2015-10-09T07:09:32 p2p:terminate_inactive_connections_loop terminate_inactive_c ] Peer's negotiating status: connecting, bytes sent
: 0, bytes received: 0 node.cpp:1343
2015-10-09T07:09:32 p2p:connect_to_task connect_to ] fatal: error connecting to peer 104.236.51.238:2005: 0 exception: u
nspecified
Operation canceled
{"message":"Operation canceled"}
asio asio.cpp:38 operator() peer_connection.cpp:254
2015-10-09T07:09:32 p2p:connect_to_task display_current_conn ] Currently have 0 of [20/200] connections node.cp
p:1725
2015-10-09T07:09:32 p2p:connect_to_task display_current_conn ] my id is 5ae3d9e6271d1901b807a0d0c7e09aaf18d2b21710cc3d6a7b1a30d4b2
560f3cd3 node.cpp:1726
2015-10-09T07:09:32 p2p:connect_to_task trigger_p2p_network_ ] Triggering connect loop now node.cpp:982
2015-10-09T07:09:32 p2p:connect_to_task schedule_peer_for_de ] scheduling peer for deletion: 104.236.51.238:2005 (this will not block
) node.cpp:1634
2015-10-09T07:09:32 p2p:connect_to_task schedule_peer_for_de ] asyncing delayed_peer_deletion_task to delete 1 peers node.cpp:1639
2015-10-09T07:09:32 p2p:delayed_peer_deletion_task delayed_peer_deletio ] beginning an iteration of delayed_peer_deletion_task with 1 i
n queue node.cpp:1598
2015-10-09T07:09:32 p2p:delayed_peer_deletion_task destroy ] calling close_connection() peer_connection
.cpp:121
2015-10-09T07:09:32 p2p:delayed_peer_deletion_task destroy ] close_connection completed normally peer_co
nnection.cpp:123
2015-10-09T07:09:32 p2p:delayed_peer_deletion_task destroy ] canceling _send_queued_messages task peer_co
nnection.cpp:136
2015-10-09T07:09:32 p2p:delayed_peer_deletion_task destroy ] cancel_and_wait completed normally peer_co
nnection.cpp:138
2015-10-09T07:09:32 p2p:delayed_peer_deletion_task destroy ] canceling accept_or_connect_task peer_co
nnection.cpp:151
2015-10-09T07:09:32 p2p:delayed_peer_deletion_task destroy ] Unexpected exception from peer_connection's accept_or_connect
_task : {"code":0,"name":"exception","message":"unspecified","stack":[{"context":{"level":"error","file":"asio.cpp","line":38,"method":
"operator()","hostname":"","thread_name":"asio","timestamp":"2015-10-09T07:09:32"},"format":"${message} ","data":{"message":"Operation
canceled"}}]} peer_connection.cpp:157
2015-10-09T07:09:32 p2p:delayed_peer_deletion_task destroy_connection ] in destroy_connection() for message_oriente
d_connection.cpp:280
2015-10-09T07:09:32 p2p:delayed_peer_deletion_task destroy_connection ] in destroy_connection() for message_oriente
d_connection.cpp:280
2015-10-09T07:09:32 p2p:delayed_peer_deletion_task delayed_peer_deletio ] leaving delayed_peer_deletion_task node.cp