iRule question

Will something like this possibly work for you?

when HTTP_REQUEST {
    check for session cookie and forward on to pool if exists
    if { HTTP::cookie exists MRHsession }{
        return
    }
    if no session cookie check is client is on the corporate network and forward on to pool if yes
    elseif { [IP::addr[IP::client_addr] equal 10.0.0.0/8] }{
        return
    }
    if no session cookie or not on the corporate network redirect to the public login page
    else {
        HTTP::redirect "http://[HTTP::host]/public"
    }
}