Re: ppp dynamic dns need /etc/resolv.conf to work, a bug?
On Thu, Nov 04, 2004 at 01:15:00PM -0600, John Hasler wrote: Pigeon writes: Also worth checking /etc/ppp/ip-up.d/000usepeerdns which ought to be detecting that you've used pppconfig and leaving all the work to .../0-dns-up. Here is usepeerdns-up: snip Ah, things have changed. I was thinking of 000usepeerdns on woody, which begins: #!/bin/sh # usepeerdns by Eduard Bloch, 12 Sep 2001. # pppconfig is installed, it will do the job test -f /etc/ppp/ip-up.d/0dns-up -a -f /usr/sbin/pppconfig exit 0 -- Pigeon Be kind to pigeons Get my GPG key here: http://pgp.mit.edu:11371/pks/lookup?op=getsearch=0x21C61F7F signature.asc Description: Digital signature
Re: ppp dynamic dns need /etc/resolv.conf to work, a bug?
Thanks for your help. First, I now understand that /etc/resolv.conf is dynamically created when using usepeerdns option of pppd. It took me some time, because I had others things to do. It turned out that Firestarter have created an ip-up.local file, that was stopping ip-up script. I guess I should fill a bug report against Firestarter (firewall program). /etc/ppp/ip-up script have this: === if [ -x /etc/ppp/ip-up.local ]; then exec /etc/ppp/ip-up.local fi echo 'ipuping3' /etc/ppp/ipup.log ; Added by me to help me find the bug run-parts /etc/ppp/ip-up.d \ --arg=$1 --arg=$2 --arg=$3 --arg=$4 --arg=$5 --arg=$6 === And /etc/ppp/ip-up.local was this: === PATH=$PATH:/sbin:/usr/sbin:/bin:/usr/bin sh /etc/firestarter/firewall.sh PATH=$PATH:/sbin:/usr/sbin:/bin:/usr/bin sh /etc/firestarter/firewall.sh PATH=$PATH:/sbin:/usr/sbin:/bin:/usr/bin sh /etc/firestarter/firewall.sh === Renaming it to /etc/ppp/ip-up.local.old have made /etc/resolv.conf to be dynamically created. But I don't tried to use Firestarter since this change. ---Paul -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: ppp dynamic dns need /etc/resolv.conf to work, a bug?
Well, before filling a new bug, I searched bugs on Firestarter package and found that bug #277496 is already there (for 16 days long) describing the problem of using /etc/ppp/ip-up.local, and the maintainer of the package working on a patch for this. --Paul -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
ppp dynamic dns need /etc/resolv.conf to work, a bug?
I use a dialup modem to connect to Internet. I use pppconfig to configured my provider connection. In advanced setting, nameservers, I have chosen dynamic. But I need to use /etc/resolv.conf with a nameserver line to be able to use Internet. I had forgotten this for a long time, but a recent update (I had this problem even with stable, but now I use testing, with a bit of unstable for mono), have made my /etc/resolv.conf become an empty file, and I had to refill it with nameserver lines. I guess I was expecting this to be an obvious bug, that most people would know and that would be fixed fastly. But now, I wonder. I have just check in the bugs for ppp package, and this don't seem to be there. I would expect /etc/resolv.conf to have no effect at all, since I can see in the logs that my ISP does indeed return DNS information (that's where I took it to fill my /etc/resolv.conf file), and my provider setting is indeed on dynamic. What should I do with this? If I should fill a bug report, what is the best package to fill it on? --Paul -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: ppp dynamic dns need /etc/resolv.conf to work, a bug?
Paul Dufresne([EMAIL PROTECTED]) is reported to have said: I use a dialup modem to connect to Internet. I use pppconfig to configured my provider connection. In advanced setting, nameservers, I have chosen dynamic. But I need to use /etc/resolv.conf with a nameserver line to be able to use Internet. I had forgotten this for a long time, but a recent update (I had this problem even with stable, but now I use testing, with a bit of unstable for mono), have made my /etc/resolv.conf become an empty file, and I had to refill it with nameserver lines. I guess I was expecting this to be an obvious bug, that most people would know and that would be fixed fastly. But now, I wonder. I have just check in the bugs for ppp package, and this don't seem to be there. I would expect /etc/resolv.conf to have no effect at all, since I can see in the logs that my ISP does indeed return DNS information (that's where I took it to fill my /etc/resolv.conf file), and my provider setting is indeed on dynamic. What should I do with this? If I should fill a bug report, what is the best package to fill it on? Don't know if you have installed the resolvconf package or not but that package does take care of, what I tink I understand, you problem is. Description: Nameserver information manager Resolvconf is a framework for keeping track of the system's information about currently available nameservers. It sets itself up as the intermediary between programs that supply nameserver information and programs that use nameserver information. Examples of programs that supply nameserver information are: ifupdown, DHCP clients, the PPP daemon and local nameservers. Examples of programs that use this information are: DNS caches, resolver libraries and the programs that use them. . This package may require some manual configuration. Please read the README file for detailed instructions. NOTE: Conflicts: pppconfig ( 2.3.1) HTH=Hope This Helps, YMMV=Your Mileage May Vary, HAND=Have A Nice Day Wayne -- It is easier to write an incorrect program than understand a correct one. ___ -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: ppp dynamic dns need /etc/resolv.conf to work, a bug?
On Thu, Nov 04, 2004 at 03:03:00PM +, Paul Dufresne wrote: I use a dialup modem to connect to Internet. I use pppconfig to configured my provider connection. In advanced setting, nameservers, I have chosen dynamic. But I need to use /etc/resolv.conf with a nameserver line to be able to use Internet. I had forgotten this for a long time, but a recent update (I had this problem even with stable, but now I use testing, with a bit of unstable for mono), have made my /etc/resolv.conf become an empty file, and I had to refill it with nameserver lines. I guess I was expecting this to be an obvious bug, that most people would know and that would be fixed fastly. But now, I wonder. I have just check in the bugs for ppp package, and this don't seem to be there. I would expect /etc/resolv.conf to have no effect at all, since I can see in the logs that my ISP does indeed return DNS information (that's where I took it to fill my /etc/resolv.conf file), and my provider setting is indeed on dynamic. What should I do with this? If I should fill a bug report, what is the best package to fill it on? Choosing dynamic nameservers in pppconfig should mean that you automatically get a new resolv.conf written when the connection comes up. This is done by the script /etc/ppp/ip-up.d/0dns-up which you can follow through and check that it is in fact possible to do what the script wants to do. Also worth checking /etc/ppp/ip-up.d/000usepeerdns which ought to be detecting that you've used pppconfig and leaving all the work to .../0-dns-up. -- Pigeon Be kind to pigeons Get my GPG key here: http://pgp.mit.edu:11371/pks/lookup?op=getsearch=0x21C61F7F signature.asc Description: Digital signature
Re: ppp dynamic dns need /etc/resolv.conf to work, a bug?
Paul Dufresne writes: In advanced setting, nameservers, I have chosen dynamic. Your ISP supports this? Not all do. I had forgotten this for a long time, but a recent update (I had this problem even with stable, but now I use testing, with a bit of unstable for mono), have made my /etc/resolv.conf become an empty file, and I had to refill it with nameserver lines. The scripts installed by pppconfig and enabled when you select dynamic save resolv.conf when ppp comes up and install a new resolv.conf containing the namservers supplied by your ISP. When ppp goes down the scripts put the old resolv.conf back. What does resolv.conf contain when ppp is up? What does it contain when ppp is down? Do you having anything else that messes with resolv.conf installed such a a dhcp client or a VPN client? In practice ISPs rarely change their nameservers. The reason they use the dynamic scheme is to make configuration easier for users by eliminating the need to enter nameserver IP numbers. -- John Hasler -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: ppp dynamic dns need /etc/resolv.conf to work, a bug?
Pigeon writes:
Also worth checking /etc/ppp/ip-up.d/000usepeerdns which ought to be
detecting that you've used pppconfig and leaving all the work to
.../0-dns-up.
Here is usepeerdns-up:
#!/bin/sh -e
# this variable is only set if the usepeerdns pppd option is being used
[ $USEPEERDNS ] || exit 0
# exit if the resolvconf package is installed
[ -x /sbin/resolvconf ] exit 0
# create the file if it does not exist
if ! [ -e /etc/resolv.conf ]; then
: /etc/resolv.conf
fi
# follow any symlink to find the real file
REALRESOLVCONF=$(readlink --canonicalize /etc/resolv.conf)
# merge the new nameservers with the other options from the old configuration
{
cat /etc/ppp/resolv.conf
grep --invert-match '^nameserver[[:space:]]' $REALRESOLVCONF || true
} $REALRESOLVCONF.tmp
# backup the old configuration and install the new one
cp -a $REALRESOLVCONF $REALRESOLVCONF.pppd-backup
mv -f $REALRESOLVCONF.tmp $REALRESOLVCONF
# tell nscd that the file has changed
[ -x /usr/sbin/nscd ] /usr/sbin/nscd -i hosts || true
exit 0
And usepeerdns-down:
#!/bin/sh -e
# exit if the resolvconf package is installed
[ -x /sbin/resolvconf ] exit 0
# follow any symlink to find the real file
if [ -e /etc/resolv.conf ]; then
REALRESOLVCONF=$(readlink --canonicalize /etc/resolv.conf)
else
REALRESOLVCONF=/etc/resolv.conf
fi
# if an old resolv.conf file exists, restore it
if [ -e $REALRESOLVCONF.pppd-backup ]; then
mv -f $REALRESOLVCONF.pppd-backup $REALRESOLVCONF
# tell nscd that the file has changed
[ -x /usr/sbin/nscd ] /usr/sbin/nscd -i hosts || true
fi
exit 0
--
John Hasler
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