Severity: 3-Major ... Symptoms ... If the BIG-IP system has a web-acceleration which provides a number of caching and optimization options suitable for HTTP/1.1. ... It uses 'Connection: Keep-Alive' header on a server side, which results in appearance of 'Keep-Alive' header in a response. ... Such a HTTP header was adopted by the industry but not standardized. ... When a web-acceleration profile is configured and provides a response, Safari clients do not accept responses with a such header and reject those with a RST_STREAM message. ... Impact ... A response to a request is rejected, which might cause incorrect rendering of HTTP page. ... Conditions ... -- BIG-IP has a virtual server with HTTP/2 profile and a web-acceleration profile. -- A pool member responds with 'Keep-Alive' header in the following format: Keep-Alive: timeout=<number>, max=<number>.