diff --git a/repos/libports/run/lwip.run b/repos/libports/run/lwip.run
index 144db0030c..351445dd59 100644
--- a/repos/libports/run/lwip.run
+++ b/repos/libports/run/lwip.run
@@ -115,7 +115,7 @@ install_config {
 	</start>
 
 	<start name="test-lwip_httpsrv" caps="120" priority="-1">
-		<resource name="RAM" quantum="4M"/>
+		<resource name="RAM" quantum="8M"/>
 		<config>
 			<vfs>
 				<dir name="dev">    <log/>             </dir>
diff --git a/repos/libports/run/nic_router.inc b/repos/libports/run/nic_router.inc
index d7db704bfb..75a0161c9c 100644
--- a/repos/libports/run/nic_router.inc
+++ b/repos/libports/run/nic_router.inc
@@ -21,7 +21,7 @@ proc client_config { name prot ip_addr gateway netmask nic srv_port srv_ip } {
 	append result {
 		<start name="} $name {" priority="-1">
 			<binary  name="} [client_bin $prot] {" />
-			<resource name="RAM" quantum="4M"/>
+			<resource name="RAM" quantum="8M"/>
 			<route>
 				<service name="Nic"> <child name="} $nic {"/> </service>
 				<any-service> <parent/> <any-child/> </any-service>
@@ -51,7 +51,7 @@ proc server_config { name prot ip_addr gateway netmask nic port } {
 	append result {
 		<start name="} $name {" priority="-1">
 			<binary  name="} [server_bin $prot] {" />
-			<resource name="RAM" quantum="4M"/>
+			<resource name="RAM" quantum="8M"/>
 			<route>
 				<service name="Nic"> <child name="} $nic {"/> </service>
 				<any-service> <parent/> <any-child/> </any-service>
diff --git a/repos/libports/run/nic_router_ipv4_fragm.run b/repos/libports/run/nic_router_ipv4_fragm.run
index 8b4205fd6e..e09b9392fd 100644
--- a/repos/libports/run/nic_router_ipv4_fragm.run
+++ b/repos/libports/run/nic_router_ipv4_fragm.run
@@ -125,7 +125,7 @@ append config {
 	</start>
 
 	<start name="test-lwip-udp-server">
-		<resource name="RAM" quantum="4M"/>
+		<resource name="RAM" quantum="8M"/>
 		<route>
 			<service name="Nic"> <child name="nic_router"/> </service>
 			<any-service> <parent/> <any-child/> </any-service>
diff --git a/repos/libports/src/lib/lwip/include/lwipopts.h b/repos/libports/src/lib/lwip/include/lwipopts.h
index bef50f5917..264d5a07e0 100644
--- a/repos/libports/src/lib/lwip/include/lwipopts.h
+++ b/repos/libports/src/lib/lwip/include/lwipopts.h
@@ -36,13 +36,13 @@ extern "C" {
 #define LWIP_NETIF_LOOPBACK         1  /* Looping back to same address? */
 #define LWIP_STATS                  0  /* disable stating */
 #define LWIP_TCP_TIMESTAMPS         1
-#define TCP_LISTEN_BACKLOG              1
-#define TCP_MSS                         1460
-#define TCP_WND                     (32 * TCP_MSS)
-#define TCP_SND_BUF                 (32 * TCP_MSS)
-#define LWIP_WND_SCALE                  3
-#define TCP_RCV_SCALE                   2
-#define TCP_SND_QUEUELEN                ((8 * (TCP_SND_BUF) + (TCP_MSS - 1))/(TCP_MSS))
+#define TCP_LISTEN_BACKLOG          1
+#define TCP_MSS                     1460
+#define TCP_WND                     (80 * TCP_MSS)
+#define TCP_SND_BUF                 (80 * TCP_MSS)
+#define LWIP_WND_SCALE              3
+#define TCP_RCV_SCALE               2
+#define TCP_SND_QUEUELEN            ((8 * (TCP_SND_BUF) + (TCP_MSS - 1))/(TCP_MSS))
 
 #define LWIP_NETIF_STATUS_CALLBACK  1  /* callback function used for interface changes */
 #define LWIP_NETIF_LINK_CALLBACK    1  /* callback function used for link-state changes */