dnsmasq tweaks

kvmd/apps/__init__.py

@@ -458,11 +458,16 @@ def _get_config_scheme() -> Dict:
                     "/usr/bin/systemd-run",
                     "--unit=kvmd-otgnet-dnsmasq",
                     "/usr/bin/dnsmasq",
+                    "--conf-file=/dev/null",
+                    "--pid-file",
+                    "--user=dnsmasq",
                     "--interface={iface}",
                     "--port=0",
                     "--dhcp-range={dhcp_ip_begin},{dhcp_ip_end},24h",
                     "--dhcp-leasefile=/run/kvmd/dnsmasq.lease",
-                    "--no-daemon",
+                    "--dhcp-option=3",
+                    "--dhcp-option=6",
+                    "--keep-in-foreground",
                 ], type=valid_command),
                 "pre_stop_cmd":   Option([
                     "/usr/bin/systemctl",