diff --git a/repos/os/src/server/nic_router/component.cc b/repos/os/src/server/nic_router/component.cc
index 3be7ea3f4c..89d64a72c0 100644
--- a/repos/os/src/server/nic_router/component.cc
+++ b/repos/os/src/server/nic_router/component.cc
@@ -121,7 +121,7 @@ Net::Root::Root(Entrypoint        &ep,
                 Region_map        &region_map)
 :
 	Root_component<Session_component>(&ep.rpc_ep(), &alloc), _timer(timer),
-	_mac_alloc(config.mac_first()), _ep(ep), _router_mac(_mac_alloc.alloc()),
+	_mac_alloc(MAC_ALLOC_BASE), _ep(ep), _router_mac(_mac_alloc.alloc()),
 	_config(config), _buf_ram(buf_ram), _region_map(region_map),
 	_interfaces(interfaces)
 { }
diff --git a/repos/os/src/server/nic_router/component.h b/repos/os/src/server/nic_router/component.h
index c6a6f276d4..de411c07a2 100644
--- a/repos/os/src/server/nic_router/component.h
+++ b/repos/os/src/server/nic_router/component.h
@@ -136,6 +136,8 @@ class Net::Root : public Genode::Root_component<Session_component>
 {
 	private:
 
+		enum { MAC_ALLOC_BASE = 0x02 };
+
 		Timer::Connection        &_timer;
 		Mac_allocator             _mac_alloc;
 		Genode::Entrypoint       &_ep;
diff --git a/repos/os/src/server/nic_router/config.xsd b/repos/os/src/server/nic_router/config.xsd
index 9658df8e7d..10bfaca339 100644
--- a/repos/os/src/server/nic_router/config.xsd
+++ b/repos/os/src/server/nic_router/config.xsd
@@ -40,13 +40,6 @@
 		</xs:restriction>
 	</xs:simpleType><!-- Domain_name -->
 
-	<xs:simpleType name="Mac_address">
-		<xs:restriction base="xs:string">
-			<xs:minLength value="11"/>
-			<xs:maxLength value="17"/>
-		</xs:restriction>
-	</xs:simpleType><!-- Mac_address -->
-
 	<xs:simpleType name="Session_label">
 		<xs:restriction base="xs:string">
 			<xs:minLength value="1"/>
@@ -158,7 +151,6 @@
 				</xs:element><!-- domain -->
 
 			</xs:choice>
-			<xs:attribute name="mac_first"                 type="Mac_address" />
 			<xs:attribute name="verbose"                   type="Boolean" />
 			<xs:attribute name="verbose_packets"           type="Boolean" />
 			<xs:attribute name="verbose_domain_state"      type="Boolean" />
diff --git a/repos/os/src/server/nic_router/configuration.cc b/repos/os/src/server/nic_router/configuration.cc
index b9c7cd5975..db0b6f7cc9 100644
--- a/repos/os/src/server/nic_router/configuration.cc
+++ b/repos/os/src/server/nic_router/configuration.cc
@@ -52,7 +52,6 @@ Configuration::Configuration(Env               &env,
 	_udp_idle_timeout     (read_sec_attr(node, "udp_idle_timeout_sec",      DEFAULT_UDP_IDLE_TIMEOUT_SEC     )),
 	_tcp_idle_timeout     (read_sec_attr(node, "tcp_idle_timeout_sec",      DEFAULT_TCP_IDLE_TIMEOUT_SEC     )),
 	_tcp_max_segm_lifetime(read_sec_attr(node, "tcp_max_segm_lifetime_sec", DEFAULT_TCP_MAX_SEGM_LIFETIME_SEC)),
-	_mac_first            (mac_from_string(node.attribute_value("mac_first", Mac_string("02:02:02:02:02:00")).string())),
 	_node(node)
 {
 	/* read domains */
diff --git a/repos/os/src/server/nic_router/configuration.h b/repos/os/src/server/nic_router/configuration.h
index cc1fa94e21..97f1dd9ffa 100644
--- a/repos/os/src/server/nic_router/configuration.h
+++ b/repos/os/src/server/nic_router/configuration.h
@@ -43,7 +43,6 @@ class Net::Configuration
 		Genode::Microseconds const  _udp_idle_timeout        { DEFAULT_UDP_IDLE_TIMEOUT_SEC      };
 		Genode::Microseconds const  _tcp_idle_timeout        { DEFAULT_TCP_IDLE_TIMEOUT_SEC      };
 		Genode::Microseconds const  _tcp_max_segm_lifetime   { DEFAULT_TCP_MAX_SEGM_LIFETIME_SEC };
-		Mac_address          const  _mac_first               { mac_from_string("02:02:02:02:02:00") };
 		Pointer<Report>             _report                  { };
 		Pointer<Genode::Reporter>   _reporter                { };
 		Domain_tree                 _domains                 { };
@@ -89,7 +88,6 @@ class Net::Configuration
 		Domain_tree          &domains()                     { return _domains; }
 		Report               &report()                      { return _report(); }
 		Genode::Xml_node      node()                  const { return _node; }
-		Mac_address    const &mac_first()             const { return _mac_first; }
 };
 
 #endif /* _CONFIGURATION_H_ */