While fiddling with wg-quick on macos, I've noticed that the DNS settings coming from the configuration file persists after calling wg-quick down on the same config. I'm guessing this is not the intended behaviour. If it is please ignore the patch.
----

diff --git a/src/tools/wg-quick/darwin.bash b/src/tools/wg-quick/darwin.bash

index aa3edeb..ef68bc4 100755

--- a/src/tools/wg-quick/darwin.bash

+++ b/src/tools/wg-quick/darwin.bash

@@ -280,11 +280,12 @@ set_dns() {

}

del_dns() {

+ collect_new_service_dns

local service response

for service in "${!SERVICE_DNS[@]}"; do

while read -r response; do

[[ $response == *Error* ]] && echo "$response" >&2

- done < <(cmd networksetup -setdnsservers "$service" ${SERVICE_DNS["$service"]} || true)

+ done < <(cmd networksetup -setdnsservers "$service" "Empty" || true)

done

}

@@ -442,6 +443,7 @@ cmd_down() {

execute_hooks "${PRE_DOWN[@]}"

[[ $SAVE_CONFIG -eq 0 ]] || save_config

del_if

+ del_dns

execute_hooks "${POST_DOWN[@]}"

}