scanimage does not work over network - Hardware

Hello,

I have a problem with accessing scanner over network (multifunction
device Brother DCP-7010).

system: Debian 3.1, kernel: 2.4.27-2-686
sane 1.0.13-2
sane-utils 1.0.15-9
xsane 0.97-3

1. xsane works locally (PC with scanner) and over network (from other
computers)
2. scanimage works only on PC with scanner

at PC-client:
--
[...]
[net] sane_read: reading paket length
[net] sane_read: read 4 bytes, 0 from 4 total
[net] sane_read: next record length=-1 bytes
[net] sane_read: received error signal
[net] sane_read: error code End of file reached
[net] do_cancel: 0x8081c68
[net] do_cancel: closing data pipe
[net] sane_cancel: sending net_cancel
[net] do_cancel: 0x8081c68
[net] sane_cancel: done
[net] sane_close: handle 0x8081c68
[net] sane_close: removing cached option descriptors
[net] sane_close: removing local option descriptors
[net] sane_close: net_close
[net] sane_close: done
[net] sane_exit: exiting
[net] sane_exit: closing dev 0x807dbc8, ctl=3
[net] sane_exit: closing dev 0x807db38, ctl=4
[net] sane_exit: finished.
---

at PC-scanner
---
[...]
[saned] do_scan: trying to read 464 bytes from scanner
[saned] do_scan: read 0 bytes from scanner
[saned] do_scan: status = `End of file reached'
[saned] do_scan: statuscode `End of file reached' was added to buffer
[saned] do_scan: trying to write 9 bytes to client
[saned] do_scan: wrote 9 bytes to client
[saned] do_scan: done, status=End of file reached
[saned] process_request: waiting for request
[saned] process_request: got request 8
[saned] process_request: waiting for request
[saned] process_request: got request 3
[saned] process_request: waiting for request
[saned] process_request: got request 10
[saned] quit: exiting
----


Thanks in advance,

Best regards,
Kamil