Response.sendRedirect() does not work well for IE 9

[cle tan]

Let's say the flow is:

click submit button(page1.jsp)-> external url(eg. http://www.google.com)

if there is no internet connection

IE will show page 1 url, with page not available error in fact it has already gone to www.google.com but it's url still displays page1.jsp?submit=submit

Tried this on chrome and firefox, works perfectly OK Only does not work for IE.