Hi, all.
I have a question about a router behavior.
rfc2461 and 2461bis assume that
the router can stop packet forwarding without disabling to send RA.
draft-ietf-ipv6-2461bis-01.txt
6.2.5. Ceasing To Be An Advertising Interface
------------------------------------------------------------------------
2555 Note that system management may disable a router's IP forwarding
2556 capability (i.e., changing the system from being a router to being a
2557 host), a step that does not necessarily imply that the router's
2558 interfaces stop being advertising interfaces. In such cases,
2559 subsequent Router Advertisements MUST set the Router Lifetime field
2560 to zero.
------------------------------------------------------------------------
But if a router stops packet forwarding, it should be a host.
draft-ietf-ipv6-2461bis-01.txt
2. TERMINOLOGY
2.1. General
------------------------------------------------------------------------
229 router - a node that forwards IP packets not explicitly
238 addressed to itself.
239
240 host - any node that is not a router.
------------------------------------------------------------------------
And rfc2461 and 2461bis also says the host never send RA.
draft-ietf-ipv6-2461bis-01.txt
6.2.4. Sending Unsolicited Router Advertisements
------------------------------------------------------------------------
2496 A host MUST NOT send Router Advertisement messages at any time.
------------------------------------------------------------------------
I think,
when the router stops packet forwarding,
the router also should stop sending RA
as like as other 3 cases specified in section 6.2.5.
draft-ietf-ipv6-2461bis-01.txt
6.2.5. Ceasing To Be An Advertising Interface
------------------------------------------------------------------------
2527 An interface may cease to be an advertising interface, through
2528 actions of system management such as:
2529
2530 - changing the AdvSendAdvertisements flag of an enabled interface
2539 from TRUE to FALSE, or
2540
2541 - administratively disabling the interface, or
2542
2543 - shutting down the system.
------------------------------------------------------------------------
What is the difference from other 3 situations?
Thanks.
----
Yukiyo Akisada <[EMAIL PROTECTED]>
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