Index: package/base-files-network/files/lib/network/config.sh
===================================================================
--- package/base-files-network/files/lib/network/config.sh  (revision 28499)
+++ package/base-files-network/files/lib/network/config.sh  (working copy)
@@ -219,6 +219,9 @@
                    # Creating the bridge here will have triggered a hotplug event, which will
                    # result in another setup_interface() call, so we simply stop processing
                    # the current event at this point.
+
+                   # Apply sysctl settings
+                   map_sysctls "$config" "br-$config"
                }
                ifconfig "$iface" ${macaddr:+hw ether "${macaddr}"} up 2>/dev/null >/dev/null
                return 1