Use the request timeout algorithm specified in RFC2131 section 4.4.5 for handling timed out RENEW and REBIND requests. This changes behavior, as previously only 2 RENEW and 2 REBIND requests were sent, no matter how long the lease lifetime. Now, requests are send according to the RFC, which results in starting with a timeout of 1/2 the t1 or t2 period, and halving the timeout for each retry down to a minimum of 60 seconds. Fixes: #17909
System and Service Manager
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