Alias 0/0 to be 0.0.0.0/0
Alias 0/0 to be 0.0.0.0/0

--- a/doh-server/server.go
+++ b/doh-server/server.go
@@ -129,6 +129,9 @@
 	}
 
 	ednsClientSubnet := r.FormValue("edns_client_subnet")
+	if ednsClientSubnet == "0/0" {
+		ednsClientSubnet = "0.0.0.0/0"
+	}
 	ednsClientFamily := uint16(0)
 	ednsClientAddress := net.IP(nil)
 	ednsClientNetmask := uint8(255)