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The BIG-IP system can redirect a request to a fallback host when the target pool is unavailable. If the configured fallback host within the HTTP profile contains HTTP iRule commands such as HTTP::host or HTTP::uri, the corresponding HTTP request can fail. A connection reset may be encountered instead.
When utilizing the HTTP profile with "fallback-host" profile option with HTTP iRule commands, incorrect connection resets can be seen by the client instead of the correct HTTP response.
- HTTP profile with "fallback-host" profile option configured containing an HTTP iRule command.
Attaching an iRule containing HTTP::redirect or similar command to the virtual server can be used instead of the fallback host-profile option to redirect traffic to another virtual server.
The HTTP "fallback-host" profile option with HTTP iRule commands will now properly execute and result in the correct HTTP response being delivered to the client.
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