wireguard-tools/contrib/reresolve-dns/README

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reresolve-dns
=============
Run this script from cron every thirty seconds or so, and it will ensure
that if, when using a dynamic DNS service, the DNS entry for a hosts
changes, the kernel will get the update to the DNS entry.
This works by parsing configuration files, and simply running:
$ wg set wg0 peer ... endpoint ...