Your message dated Fri, 26 Nov 2010 17:58:48 -0500
with message-id <[email protected]>
and subject line Re: Bug#605060: dnsmasq preserves cache across interface
changes
has caused the Debian Bug report #605060,
regarding dnsmasq preserves cache across interface changes
to be marked as done.
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605060: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=605060
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: dnsmasq
Version: 2.55-2
Severity: normal
I am using resolvconf and dnsmasq to handle internal DNS servers for
our VPN. When openconnect creates the tun0 interface, it adds the
internal nameservers using resolvconf. resolvconf modifies dnsmasq's
configuration file, and dnsmasq rereads it. But my IRC client fails
to reconnect to the internal server at this point, because the
negative lookup has been cached - the IRC server's hostname is only
valid inside the VPN.
I don't see any option to make dnsmasq clear its cache when the VPN
comes up other than restarting dnsmasq entirely. It'd be nice if I
could make this happen automatically when dnsmasq rereads the
resolv.conf file.
-- System Information:
Debian Release: squeeze/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.32-5-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages dnsmasq depends on:
ii adduser 3.112+nmu1 add and remove users and groups
ii dnsmasq-base 2.55-2 A small caching DNS proxy and DHCP
ii netbase 4.43 Basic TCP/IP networking system
dnsmasq recommends no packages.
Versions of packages dnsmasq suggests:
ii resolvconf 1.46 name server information handler
-- no debconf information
--- End Message ---
--- Begin Message ---
On Fri, Nov 26, 2010 at 09:21:39PM +0000, Simon Kelley wrote:
> From "man dnsmasq"
>
> --clear-on-reload
> Whenever /etc/resolv.conf is re-read, clear the DNS cache. This
> is useful when new nameservers may have different data than that
> held in cache.
>
> Unless I've misunderstood, that's what you want. (Note that
> "/etc/resolv.conf" here stands for any file that dnsmasq is reading to
> get the nameservers.)
Right you are! I didn't manage to find this option, but it's just
what I need. Thanks.
--
Daniel Jacobowitz
CodeSourcery
--- End Message ---
