1) update the preferred lifetime regardless of whether the valid
lifetime is accepted or not wrt the two-hour rule
2) update the preferred lifetime only when the valid lifetime is
accepted
3) leave this as implementation dependent
The KAME/BSD implementation behaves as option 1.
So my first point is that we should clearly specify how the preferred
lifetime is updated in 5.5.3 e) of rfc2462bis, mainly for normal
cases. My second point is what we should do about the preferred
lifetime when the valid lifetime is ignored due to the two-hour rule.
My suggestion to the
JINMEI Tatuya wrote:
While working on the rfc2462bis (stateless address autoconf) work,
I've found a new issue, and would like to hear opinions.
The current RFC2462 describes in Section 5.5.3 e) how the valid
lifetime of an autoconfigured address is updated, considering the
avoidance of DoS attack
In your previous mail you wrote:
The current RFC2462 describes in Section 5.5.3 e) how the valid
lifetime of an autoconfigured address is updated, considering the
avoidance of DoS attack with too short lifetimes.
= the DoS attack is about valid lifetime only because when a valid
If so, it should make sense to recover this part in rfc2462bis.
Possible options include:
1) update the preferred lifetime regardless of whether the valid
lifetime is accepted or not wrt the two-hour rule
2) update the preferred lifetime only when the valid lifetime is
accepted
3)
On Thu, 05 Feb 2004 11:35:53 +0900,
S. Daniel Park [EMAIL PROTECTED] said:
The KAME/BSD implementation behaves as option 1. However, it seems to
me that option 2 makes much more sense because a rejected valid
lifetime indicates a possibility of attack and the other parts of
the
On Wed, 04 Feb 2004 10:17:44 +0100,
Francis Dupont [EMAIL PROTECTED] said:
The current RFC2462 describes in Section 5.5.3 e) how the valid
lifetime of an autoconfigured address is updated, considering the
avoidance of DoS attack with too short lifetimes.
= the DoS attack is about
What do you mean by omitted 'two-hour' rule? KAME implements the
two-hour rule just as specified in RFC2462 with one exception:
omitting the following part of 5.5.3 e)
2) If ...(snip) and the
received Lifetime is less than or equal to StoredLifetime,
since this
