diff --git a/sdkconfig.defaults b/sdkconfig.defaults
index 05407f4..a085ea9 100644
--- a/sdkconfig.defaults
+++ b/sdkconfig.defaults
@@ -19,3 +19,8 @@ CONFIG_ESPTOOLPY_FLASHSIZE_32MB=y
 
 # LLDP and PTP send raw frames from their own tasks next to lwIP: serialise EMAC transmits
 CONFIG_ETH_TRANSMIT_MUTEX=y
+
+# lwIP default is 10 sockets; PTP (2), AES67 TX, SAP, syslog and httpd's listen/control sockets
+# use 7, leaving ~3 for web clients (httpd allows 7): a browser's keep-alive connections then
+# starve new requests. 16 = 7 others + 7 web clients + OTA self-test client + 1 spare.
+CONFIG_LWIP_MAX_SOCKETS=16