pf fails to start

stephen hoekstra stephenhoekstra at gmail.com
Thu Sep 7 06:35:22 PDT 2006


Hi,

There was a thread about this quite a while back where if the
interface didn't exist pf wouldn't start.

It's probably the wrong way to do it, but my dsl connection is
controlled by a crontab script that runs every minute or so to see if
line is up (my line is quite bad).  at end of script it does a 'pfctl
-sr | wc -l' and and if output is > 0 then end else pfctl -f
/etc/pf.conf

Like I said, probably bad way to check it, but I have same problem
where if ppp connection is not established, pf won't load ruleset
cause tun0 doesn't exist.  Atleast that way when cron job checks if
line is up (every 2 minute), it also checks if pf is loaded.

1) system boots up
2) cronjob runs
2a) starts ppp
2b) checks if wc -l is >0
3) system started and online with pf running








On 9/7/06, KES <kes-kes at yandex.ru> wrote:
> Hello
>
> pf fails to start if interface doesnt exist or IP address not assigned
>
> I have trobles with tun0 (pppeo connection)
>
> Look at next picture:
>
> 1) power fail,
> 2) FreeBSD starting,
> 3) do pppoe connection to provider
> 3.a) pppoe fail (ISP has some problem)
> 4) pf starts and fails =((
> 5) FreeBSD fall to infinit loop (I have wait 15minutes and then pressCTRL+C)
>
> Copy of console messages:
> pflog promiscios
> pf enabled
> pflog: here some message (I don't remember)
>
> some experements:
>
> kes# ps ax|grep ppp
>   357  ??  Ss     0:18.88 /usr/sbin/ppp -ddial -unit1 adsl
>   373  ??  Rs    46:53.56 /usr/sbin/ppp -dedicated -quiet -unit0 leased
> 47226  p2  DL+    0:00.00 grep ppp
>
> #KILL pppoe connection
> kes# kill -9  373
> kes# kill -9 373
> 373: No such process
>
> #Reload pf.conf
> kes# pfctl -f /etc/pf.conf
> no IP address found for tun0
> /etc/pf.conf:48: could not parse host specification
> no IP address found for tun0
> /etc/pf.conf:66: could not parse host specification
> no IP address found for tun0
> /etc/pf.conf:100: could not parse host specification
> no IP address found for tun0
> /etc/pf.conf:101: could not parse host specification
> pfctl: Syntax error in config file: pf rules not loaded
>
> #start pppoe
> kes#  /usr/sbin/ppp -dedicated -quiet -unit0 leased
> kes# pfctl -f /etc/pf.conf
>
> #no errors here.
> kes#
>
> So I have no "Syntax error in config file"
>
> TO authur of pf:
> You must change behavior of pf like ipfw does.
> ipfw only do warning messages in situations like this.
>
>
>  KES                          mailto:kes-kes at yandex.ru
>
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