anchor.diff:  
     # Networking options.
     IP_PNP n
  -  ${optionalString (versionOlder version "3.13") ''
  -    IPV6_PRIVACY y
  -  ''}
     IP_MROUTE_MULTIPLE_TABLES y
     IPV6_ROUTER_PREF y
     IPV6_ROUTE_INFO y
  
positive.code:   NUMA y
    NUMA_BALANCING y
  
    # Disable some expensive (?) features.
    PM_TRACE_RTC n
  
    # Enable various subsystems.
  
negative.code:   SLIP_SMART y
    HWMON y
    THERMAL_HWMON y # Hardware monitoring support
    UEVENT_HELPER n
    USB_EHCI_ROOT_HUB_TT y # Root Hub Transaction Translators
    USB_EHCI_TT_NEWSCHED y # Improved transaction translator scheduling
    X86_CHECK_BIOS_CORRUPTION y
  