If you want to log kernel messages over the network, enable this.
See <file:Documentation/networking/netconsole.txt> for details.
+config NETCONSOLE_DYNAMIC
+ bool "Dynamic reconfiguration of logging targets (EXPERIMENTAL)"
+ depends on NETCONSOLE && SYSFS && EXPERIMENTAL
+ select CONFIGFS_FS
+ help
+ This option enables the ability to dynamically reconfigure target
+ parameters (interface, IP addresses, port numbers, MAC addresses)
+ at runtime through a userspace interface exported using configfs.
+ See <file:Documentation/networking/netconsole.txt> for details.
+
config NETPOLL
def_bool NETCONSOLE