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Update embedded dnsmasq to v2.87 #1449

Merged
merged 2 commits into from
Sep 26, 2022
Merged

Update embedded dnsmasq to v2.87 #1449

merged 2 commits into from
Sep 26, 2022

Commits on Sep 26, 2022

  1. Fix a problem in overload handling. 

    Sending the same query repeatedly to a dnsmasq instance which
doesn't get replies from upstream will eventually hit the
hard limit on frec_src structures and start gettin REFUSED
replies. This is OK, except that since the queries are no longer
being forwarded, an upstream server coming back doesn't reset the
situation. If there is any other traffic, frec allocation will
eventually delete the timed-out frec and get things moving again,
but that's not guaranteed.

To fix this we explicitly delete the frec once timed out in this case.

Thanks to Filip Jenicek for noticing and characterising this problem.

Signed-off-by: DL6ER <dl6er@dl6er.de>
    @simonkelley @DL6ER
    simonkelley authored and DL6ER committed Sep 26, 2022
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  2. Update embedded dnsmasq to v2.87 

    Signed-off-by: DL6ER <dl6er@dl6er.de>
    @DL6ER
    DL6ER committed Sep 26, 2022
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