HTTPS Monitor failing after upgrade to v11.4(HF3)

Hi folks.

We recently upgraded from 10.2.4(HF5) to 11.4.1(HF3) and have come across a strange problem with a HTTPS monitor. I have done some testing and can see the following:

pool member = 10.5.6.7:10443. Default HTTPS monitor = FAILS pool member = 10.5.6.7:443. Default HTTPS monitor = WORKS pool member = 10.5.6.7:10443. Default HTTPS_443 monitor = WORKS pool member = 10.5.6.7:443. Default HTTPS_443 monitor = WORKS

I have checked using telnet to ensure port 10443 is open - IT IS.

When connected i tried a GET for a file i know is there (small.gif) and receive following:

GET /small.gif

400 Bad Request

Your browser sent a request that this server could not understand.

Connection closed by foreign host.

curl -v -k -L https://10.5.6.7:10443/small.gif

* About to connect() to 10.5.6.7 port 10443 (0)

* Trying 10.5.6.7... connected

* Connected to 10.5.6.7 (10.5.6.7) port 10443 (0)

* successfully set certificate verify locations:

* CAfile: /etc/pki/tls/certs/ca-bundle.crt

CApath: none

* SSLv3, TLS handshake, Client hello (1):

* SSLv3, TLS handshake, Server hello (2):

* SSLv3, TLS handshake, CERT (11):

* SSLv3, TLS handshake, Server key exchange (12):

* SSLv3, TLS handshake, Server finished (14):

* SSLv3, TLS handshake, Client key exchange (16):

* SSLv3, TLS change cipher, Client hello (1):

* SSLv3, TLS handshake, Finished (20):

* SSLv3, TLS change cipher, Client hello (1):

* SSLv3, TLS handshake, Finished (20):

* SSL connection using DHE-RSA-AES256-SHA

* Server certificate:

* subject: C=GB; ST=Scotland; O=Company; OU=IS; CN=test.domain.com; emailAddress=test_admin@company.com

* start date: 2014-01-08 11:44:19 GMT

* expire date: 2029-01-29 11:44:19 GMT

* common name: test.domain.com (does not match '10.5.6.7')

* issuer: C=GB; ST=Scotland; L=Edinburgh; O=Company; OU=IS; CN=IS; emailAddress=test_admin@company.com

* SSL certificate verify result: self signed certificate in certificate chain (19), continuing anyway.

> GET /small.gif HTTP/1.1

> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8y zlib/1.2.3 libidn/0.6.5

> Host: 10.5.6.7:10443

> Accept: /

>

< HTTP/1.1 200 OK

< Date: Tue, 13 May 2014 13:12:35 GMT

< Server: Apache

< Last-Modified: Wed, 24 Mar 2010 08:48:39 GMT

< Accept-Ranges: bytes

< Content-Length: 826

< Connection: close

< Content-Type: image/gif

<

* Closing connection 0

* SSLv3, TLS alert, Client hello (1):

GIF89a÷ÀÀÀÿÿÿÿÿÿÿÿÿÿÿÿ3fÌÿ3333f33Ì3ÿff3f

Any help would be appreciated.

Thanks

Graham