Default route destination changing without warning follow-up

[Krzysztof Barcikowski]

W dniu 2012-10-05 00:23, Gary Palmer pisze:
> On Thu, Oct 04, 2012 at 07:36:51PM +0200, Krzysztof Barcikowski wrote:
>> W dniu 2012-10-04 18:02, John-Mark Gurney pisze:
>>> Alexander V. Chernikov wrote this message on Mon, Oct 01, 2012 at 01:07 +0400:
>>>> On 01.10.2012 00:59, Dominic Blais wrote:
>>>>> It's all about IPv4 in my case.
>>>> It will be great to supply some more details (e.g. like FreeBSD version,
>>>> interfaces configuration, netstat -rn output).
>>>>
>>>> How often does this happen ?
>>>> (e.g. while true; do echo -n `date` ; route -n get default | grep gate;
>>>> sleep 1; done can help)
>>>>
>>>> If this is reproducible, what actions precedes this change?
>>>> Maybe some ARP traffic on that interface, or interface
>>>> creation/deletion, or.. ?
>>>>
>>>> Is route monitor completely silent when the change happens?
>>> Just for refernece, Dominic brought this up in an earlier thread:
>>> http://www.freebsd.org/cgi/mid.cgi?2DE61B0869B7484997BCA012845482C7EBE62DDD88@WIN2008.Domnt.abi.ca
>>>
>>> and at least on other person seems to have the same issue...
>>>
>>> quick question for you Dominic, do you see the correct number of routes,
>>> but a new wrong one appear?  or does the route just simply disapear? or
>>> does a new one seem to replace the old one?
>>>
>>> The reason I ask is that if a new wrong one appears, it could be memory
>>> corruption, but if a new one replaces the old one, for some reason when
>>> allocating a new route, it could accidentatlly be replacing the default
>>> route...
>>>
>>> Just some thoughts...
>>>
>> Hi,
>>
>> I don't see a second new route appearing in my case, just the default or
>> static route is replaced.
>> I'm not conviced of memory corruption, as it happens on 3 different
>> physical machines.
> Sorry for jumping into the middle of the thread (and apologies if this was
> asked/answered previously), however what are the settings for the following
> sysctls?
>
> net.inet.icmp.log_redirect
> net.inet.icmp.drop_redirect
>
> and potentially
>
> net.inet6.ip6.redirect
> net.inet6.icmp6.rediraccept
>
> Gary
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Hi,

net.inet.icmp.log_redirect: 0
net.inet.icmp.drop_redirect: 1

net.inet6.ip6.redirect: 1
net.inet6.icmp6.rediraccept: 1

Best regards!
Krzysiek Barcikowski





Krzysiek Barcikowski