force kresd to follow net.ipv(4,6) settings when forwarding

changed title from force kresd to follow net.ip(4,6) settings when forwarding to force kresd to follow net.ipv(4,6) settings when forwarding

assigned to @vcunat

added 30 commits

• 51dd7de7...41cf07be - 28 commits from branch master
• 06bf7a39 - force kresd to follow net.ip(4,6) settings when forwarding
• 15dc8bd8 - force kresd to follow net.ip(4,6) settings when forwarding

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When no address is usable you get SERVFAIL and a message in the log (even if not verbose):

error: ...cunat/dev/resolver/t/install/lib/kdns_modules/policy.lua:95: no adress in the configured NS set is usable:
  [1] => 2001:1488:800:400::2:133#00853
  [2] => 217.31.204.133#00853

added 1 commit

• 2871e5bc - add tests for the issues from (grand)parent commits

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resolved all discussions

added 1 commit

• ee440dec - nitpick: polish error message for unusable address set

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resolved all discussions

removed assignee

enabled an automatic merge when the pipeline for ee440dec succeeds

canceled the automatic merge

merged

mentioned in commit e494bd26