Quoting Dan Williams <[EMAIL PROTECTED]>:
> On Wed, 2006-07-12 at 09:09 -0400, Derek Atkins wrote:
>> Quoting Robert Love <[EMAIL PROTECTED]>:
>>
>> > On Tue, 2006-07-11 at 15:05 -0400, Derek Atkins wrote:
>> >
>> >> I'm sitting here in Montréal at the IETF and noticed a really
>> >> annoying problem. When I wander from one room to another
>> >> I have to roam from one AP to another, and NM seems to disconnect
>> >> the network. When I arrive at the other room I have to manually
>> >> re-select the network and when it comes back up it's forgotten my
>> >> DHCP lease and gets me a new IP Address.
>> >
>> > Actually, I think Madwifi has a bug where it cannot roam. Instead of
>> > silently roaming to a new AP (a process that does not involve NM), the
>> > driver loses association.
>>
>> Well, it would be nice if that bug were fixed... But it doesn't answer
>> the question of why, when I come back up, do I get a new IP Address from
>> DHCP? It's almost as if NM/dhclient don't know that it can just make
>> a DHCP_REQUEST and instead always falls back to a DHCP_DISCOVER. This
>> is true even if the Network Name (ESSID) hasn't changed! *THIS* I consider
>> a bug in NM.
>
> Well, I think that what should be done here is to try to get dhclient to
> do a DHCP renew when we notice an AP change, as long as that AP is in
> the same cached BSSID list as the old AP, rather than doing a request
> from the start. That's a bit complicated I guess, but it would be more
> ideal than the current situation.
Or even if it's the same ESSID (regardless of whether the BSSID is cached
or not)? If I walk across the IETF floor quickly it's possible that my
ultimate destination might not be a BSSID that was in range at the beginning
of the session, so the BSSID might not be cached. Or I might never have
been in that room before. Indeed, as a /user/ I should never have to
worry about the BSSID sitting under the ESSID (except, perhaps, in the
case where there's an (a) vs. (b/g) network difference).
Thanks!
> Dan
-derek
--
Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
Member, MIT Student Information Processing Board (SIPB)
URL: http://web.mit.edu/warlord/ PP-ASEL-IA N1NWH
[EMAIL PROTECTED] PGP key available
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