Set DNSSEC for specific interface

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sudo tee /etc/NetworkManager/dispatcher.d/dnssec.sh << "EOF" > /dev/null
#!/usr/bin/bash
if [ "${NM_DISPATCHER_ACTION}" = "up" ] \
&& [ "${CONNECTION_ID}" = "CONNECTION_NAME" ]
then resolvectl dnssec ${DEVICE_IP_IFACE} no
fi
EOF
sudo chmod +x /etc/NetworkManager/dispatcher.d/dnssec.sh

NetworkManager-dispatcher: NetworkManager Reference Manual

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