[bug #67251] Don't reuse connection when retrying failed request

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Follow-up Comment #1, bug #67251 (group wget):=0A=0ARe 509 response, I was =
able to avoid that by adding the following option:=0Ahttp_keep_alive =3D of=
f=0ABut then I noticed another related issue, If the network interruption c=
auses=0Athe request to time out and the retry is started, but the dns looku=
p fails=0Abecause of the network interruption, future retries will all fail=
 even when=0Athe network interruption resolves:=0A=0AResolving $host ($host=
)... failed: Operation timed out.=0Awget: unable to resolve host address =
=E2=80=98$host=E2=80=99=0ARetrying.=0A...=0A=0AI am now adding `dns_cache =
=3D off` to see if this avoids that issue.=0A=0A=0A    ____________________=
___________________________________=0A=0AReply to this item at:=0A=0A  <htt=
ps://savannah.gnu.org/bugs/?67251>=0A=0A___________________________________=
____________=0AMessage sent via Savannah=0Ahttps://savannah.gnu.org/=0A
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