diff --git a/boards/px4/fmu-v5x/nuttx-config/nsh/defconfig b/boards/px4/fmu-v5x/nuttx-config/nsh/defconfig
index 7785b2d1c7..ad2d917198 100644
--- a/boards/px4/fmu-v5x/nuttx-config/nsh/defconfig
+++ b/boards/px4/fmu-v5x/nuttx-config/nsh/defconfig
@@ -118,11 +118,13 @@ CONFIG_NETUTILS_TELNETD=y
 CONFIG_NET_ARP_IPIN=y
 CONFIG_NET_ARP_SEND=y
 CONFIG_NET_BROADCAST=y
+CONFIG_NET_ETH_PKTSIZE=1518
 CONFIG_NET_ICMP=y
 CONFIG_NET_ICMP_SOCKET=y
 CONFIG_NET_SOLINGER=y
 CONFIG_NET_TCP=y
 CONFIG_NET_TCPBACKLOG=y
+CONFIG_NET_TCP_DELAYED_ACK=y
 CONFIG_NET_TCP_WRITE_BUFFERS=y
 CONFIG_NET_UDP=y
 CONFIG_NET_UDP_CHECKSUMS=y