[CUWiN-Dev] dhclient bug

[Matthew Isaacs]

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David Young wrote:
> On Fri, Mar 30, 2007 at 03:46:48PM -0500, Matthew Isaacs wrote:
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>> Found a bug in dhclient.  Seems that adding any enter-hooks makes it
>> crap out, even with a simple hook-script like this:
>>
>> === SCRIPT ===
>>  echo `date`: entering dhclient-enter-hooks, dumping variables. \
>>                 >> /tmp/dhclient-script.debug
>>
>>         for i in reason interface medium alias_ip_address new_ip_address \
>>                 new_subnet_mask new_domain_name new_domain_name_servers \
>>                 new_routers new_static_routes old_ip_address
>> old_subnet_mask \
>>                 old_domain_name old_domain_name_servers old_routers \
>>                 old_static_routes; do
>>
>>                 echo $i=\'${!i}\' >> /tmp/dhclient-script.debug
>>         done
>>
>>         echo '--------------------------' >> /tmp/dhclient-script.debug
>> === END SCRIPT ===
>>
>> The error recorded: "dhclient.c(2072): null pointer".  It seems to enter
>> into some sort of infinite loop, constantly calling the enter hooks, but
>> never really running.  It also causes nasty problems on the dhcp server
>> on my machine...it makes it chew through leases and thrashes the
>> hard-drive changing leases several times a second.
> 
> Does it help to put an 'exit 0' at the bottom of your script?
> 
> Dave
> 

nope.  exit 1 (which should cause dhclient to quit without doing
anything) produces the same behavior.

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