diff options
Diffstat (limited to 'net/ipv4')
-rw-r--r-- | net/ipv4/Kconfig | 35 |
1 files changed, 13 insertions, 22 deletions
diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig index 5b919f7b45db..70491d9035eb 100644 --- a/net/ipv4/Kconfig +++ b/net/ipv4/Kconfig | |||
@@ -273,29 +273,20 @@ config IP_PIMSM_V2 | |||
273 | you want to play with it. | 273 | you want to play with it. |
274 | 274 | ||
275 | config ARPD | 275 | config ARPD |
276 | bool "IP: ARP daemon support (EXPERIMENTAL)" | 276 | bool "IP: ARP daemon support" |
277 | depends on EXPERIMENTAL | ||
278 | ---help--- | 277 | ---help--- |
279 | Normally, the kernel maintains an internal cache which maps IP | 278 | The kernel maintains an internal cache which maps IP addresses to |
280 | addresses to hardware addresses on the local network, so that | 279 | hardware addresses on the local network, so that Ethernet/Token Ring/ |
281 | Ethernet/Token Ring/ etc. frames are sent to the proper address on | 280 | etc. frames are sent to the proper address on the physical networking |
282 | the physical networking layer. For small networks having a few | 281 | layer. Normally, kernel uses the ARP protocol to resolve these |
283 | hundred directly connected hosts or less, keeping this address | 282 | mappings. |
284 | resolution (ARP) cache inside the kernel works well. However, | 283 | |
285 | maintaining an internal ARP cache does not work well for very large | 284 | Saying Y here adds support to have an user space daemon to do this |
286 | switched networks, and will use a lot of kernel memory if TCP/IP | 285 | resolution instead. This is useful for implementing an alternate |
287 | connections are made to many machines on the network. | 286 | address resolution protocol (e.g. NHRP on mGRE tunnels) and also for |
288 | 287 | testing purposes. | |
289 | If you say Y here, the kernel's internal ARP cache will never grow | 288 | |
290 | to more than 256 entries (the oldest entries are expired in a LIFO | 289 | If unsure, say N. |
291 | manner) and communication will be attempted with the user space ARP | ||
292 | daemon arpd. Arpd then answers the address resolution request either | ||
293 | from its own cache or by asking the net. | ||
294 | |||
295 | This code is experimental and also obsolete. If you want to use it, | ||
296 | you need to find a version of the daemon arpd on the net somewhere, | ||
297 | and you should also say Y to "Kernel/User network link driver", | ||
298 | below. If unsure, say N. | ||
299 | 290 | ||
300 | config SYN_COOKIES | 291 | config SYN_COOKIES |
301 | bool "IP: TCP syncookie support (disabled per default)" | 292 | bool "IP: TCP syncookie support (disabled per default)" |