F5 LTM (VE) - KeepAlive even if real server close connection

 with oneconnect

[root@ve10:Active] config  b virtual bar list
virtual bar {
   snat automap
   pool foo
   destination 172.28.19.79:80
   ip protocol 6
   profiles {
      http {}
      oneconnect {}
      tcp {}
   }
}

[root@ve10:Active] config  ssldump -Aed -nni 0.0 port 80
New TCP connection 1: 172.28.19.251(45894) <-> 172.28.19.79(80)
1346681818.7056 (0.0011)  C>S
---------------------------------------------------------------
HEAD / HTTP/1.1
User-Agent: curl/7.15.5 (i686-redhat-linux-gnu) libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5
Host: 172.28.19.79
Accept: */*

---------------------------------------------------------------

New TCP connection 2: 200.200.200.10(45894) <-> 200.200.200.101(80)
1346681818.7067 (0.0010)  C>S
---------------------------------------------------------------
HEAD / HTTP/1.1
User-Agent: curl/7.15.5 (i686-redhat-linux-gnu) libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5
Host: 172.28.19.79
Accept: */*

---------------------------------------------------------------

1346681818.7075 (0.0007)  S>C
---------------------------------------------------------------
HTTP/1.1 200 OK
Date: Mon, 03 Sep 2012 14:31:48 GMT
Server: Apache/2.2.3 (CentOS)
Last-Modified: Fri, 11 Nov 2011 14:48:14 GMT
ETag: "4183e4-3e-9c564780"
Accept-Ranges: bytes
Content-Length: 62
Connection: close
Content-Type: text/html; charset=UTF-8

---------------------------------------------------------------

1346681818.7075 (0.0019)  S>C
---------------------------------------------------------------
HTTP/1.1 200 OK
Date: Mon, 03 Sep 2012 14:31:48 GMT
Server: Apache/2.2.3 (CentOS)
Last-Modified: Fri, 11 Nov 2011 14:48:14 GMT
ETag: "4183e4-3e-9c564780"
Accept-Ranges: bytes
Content-Length: 62
X-Cnection: close
Content-Type: text/html; charset=UTF-8

---------------------------------------------------------------

with oneconnect, fin in server-side is not sent to client-side 

2    1346681818.7075 (0.0000)  C>S  TCP FIN
2    1346681818.7075 (0.0000)  S>C  TCP FIN
1    1346681818.7086 (0.0011)  C>S  TCP FIN
1    1346681818.7086 (0.0000)  S>C  TCP FIN