Subject: Re: dhcpd(8) _cannot_ be completely disabled on an interface
To: None <firstname.lastname@example.org>
From: Michael Richardson <email@example.com>
Date: 01/12/2002 08:33:35
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>>>>> "der" == der Mouse <mouse@Rodents.Montreal.QC.CA> writes:
>>>> in which case the interface "name" and "address" (which have the
>>>> same lifetime issues as the number)
>>> I don't think so, not if numbers are assigned sequentually at boot
>>> and never repeated. In practice today, a 32-bit serial number will
>>> never be repeated; a 64-bit probably will never be repeated for the
>>> foreseeable lifetime of NetBSD.
>> While this might be true,
>> u_short if_index; /* numeric abbreviation for this if */
>> in practice today 16-bit serial numbers are repeated.
der> They are? I have trouble thinking of any situation not contrived for
der> the purpose where 64K interface creates occur without an intervening
der> reboot. Where did you find such? It's probably worth preserving as a
der> stress-test case....
Any box with a non-trivial network connection running PPPoE as termination
for dialup/DSL customers. An OC-3 worth of 1Mb/s channels is 100
channels. Average uptime for a Windoz box in use being two-three hours,
that is 81 days of uptime.
I know of vendors putting NetBSD in their systems that expect more than 81
days of uptime.
Since these ABIs tend to be hard to change, please burn the 2 bytes and
make it u_int32_t.
] ON HUMILITY: to err is human. To moo, bovine. | firewalls [
] Michael Richardson, Sandelman Software Works, Ottawa, ON |net architect[
] firstname.lastname@example.org http://www.sandelman.ottawa.on.ca/ |device driver[
] panic("Just another NetBSD/notebook using, kernel hacking, security guy"); [
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Comment: Finger me for keys
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