in my smbd.log I see:
[2005/12/08 17:08:17, 0] lib/util_sock.c:get_peer_addr(1150)
getpeername failed. Error was Transport endpoint is not connected

But there's also an entry for 0.0.0.0.log ... Is this even a normal IP?

[2005/12/08 17:08:17, 1] smbd/process.c:process_smb(1084)
[2005/12/08 17:08:17, 0] lib/util_sock.c:get_peer_addr(1150)
getpeername failed. Error was Transport endpoint is not connected
Connection denied from 0.0.0.0
[2005/12/08 17:08:17, 0] lib/util_sock.c:write_socket_data(430)
write_socket_data: write failure. Error = Connection reset by peer
[2005/12/08 17:08:17, 0] lib/util_sock.c:write_socket(455)
write_socket: Error writing 5 bytes to socket 24: ERRNO = Connection reset by peer
[2005/12/08 17:08:17, 0] lib/util_sock.c:send_smb(647)
Error writing 5 bytes to client. -1. (Connection reset by peer)