networking won't come back up until reboot after ISP outage
nightrecon at hotmail.com
Wed Nov 11 20:23:02 UTC 2009
>> In my case the router does get the renewed ip, as I described earlier.
>> However, even after waiting 8+ hours, the system will not recover from
>> the outage properly (reason unknown). That's what this thread is all
> When I started the system today, I found that again it had no
> connectivity. I did some checks and then found that 'natd' was not
> running. But this is not happening that frequently, and seems to only
> have started after the last system update. Could be some sort of race
> condition. Is there a logfile that natd writes to, so that I may
> investigate the reason why it is exiting?
My first gut instinct about your problem was to blame dhclient first. But no
NATD would definitely be a problem. I am assuming we are talking about IPFW
and NATD here, and it has been many years since I've used it. I migrated to
IPFILTER and then on to PF quite some time ago.
Most logging related to IPFW is already present, but IIRC to log NATD you
need to turn it on, and possibly configure it in syslog.conf should you
desire the output somewhere other than /var/log/alias.log.
Keep in mind there are two ways to pass options. You can use something like
natd_flags="-l" in /etc/rc.conf. Man natd will provide a list. The second
method is to place the options in a file such as natd.conf and pull them in
like natd_flags="-f /etc/natd.conf".
I looked in my notes and here is a snippet from an old /etc/rc.conf:
You could add a 'log yes' line here; it does the same as the -l described
above. Note that you might need the 'dynamic yes' switch for an interface
that changes. In my case I was using it for a ppp dial-up connection, change
interface as needed.
Sounds like you are narrowing down the culprit(s). Also note that it could
possibly be a timing issue related to the order things start up. If the NATD
is attempting to start before the interface has come up it will die.
Shouldn't happen, but... YMMV
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