Zebedee suddenly drops connection

Hi!

I have a problem with zebedee. The tunnel was working for about 5 months, but now, suddenly the server drops the connection with no reason. All is ok, the server machine works ok. Nothing was touched that can justify this new behavior.

This is the zebedee server log:

zebedee(1622/24256):    server routine entered
zebedee(1622/24256):    validating client IP address
zebedee(1622/24256):     peer address from connection is [client_ip]
zebedee(1622/24256):    reading protocol version
zebedee(1622/24256):      readData: receiving 2 of 2
zebedee(1622/24256):      readData: EOF or error: (Resource temporarily unavailable)
zebedee(1622/24256): ERROR: failed reading protocol version: (Resource temporarily unavailable)


Sniffing the connection at client side:

No. Time     Source      Destination Pro Info
  1 0.000000 [client_ip] [server_ip] TCP 36708 > 3307 [SYN] Seq=3747062552 Ack=0 Win=65535 Len=0
  2 0.118765 [server_ip] [client_ip] TCP 3307 > 36708 [SYN, ACK] Seq=4279648241 Ack=3747062553 Win=57344 Len=0
  3 0.118844 [client_ip] [server_ip] TCP 36708 > 3307 [ACK] Seq=3747062553 Ack=4279648242 Win=65535 Len=0
  4 0.119141 [client_ip] [server_ip] TCP 36708 > 3307 [PSH, ACK] Seq=3747062553 Ack=4279648242 Win=65535 Len=2
  5 0.241088 [server_ip] [client_ip] TCP 3307 > 36708 [FIN, ACK] Seq=4279648242 Ack=3747062553 Win=58400 Len=0
  6 0.241195 [client_ip] [server_ip] TCP 36708 > 3307 [ACK] Seq=3747062555 Ack=4279648243 Win=65535 Len=0
  7 0.241512 [client_ip] [server_ip] TCP 36708 > 3307 [FIN, ACK] Seq=3747062555 Ack=4279648243 Win=65535 Len=0
  8 0.247622 [server_ip] [client_ip] TCP 3307 > 36708 [RST] Seq=4279648242 Ack=0 Win=0 Len=0
  9 0.356922 [server_ip] [client_ip] TCP 3307 > 36708 [RST] Seq=4279648243 Ack=0 Win=0 Len=0
 10 0.371550 [server_ip] [client_ip] TCP 3307 > 36708 [RST] Seq=4279648243 Ack=0 Win=0 Len=0


The packet 4 sent the initial two-byte with client version. Note the 3 last packets, where the server send the RST to close the connection.

The client is Windows 2000 Pro and server is FreeBSD 4.9-RELEASE. Zebedee version is 2.5.2.

Any advise will be apreciated.

Thanks and sorry for my bad english.




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