Package: bind9
Version: 1:9.9.5.dfsg-4
Severity: important
Tags: patch
Currently, the following scripts are installed by the bind9 package:
/etc/ppp/ip-up.d/bind9
/etc/ppp/ip-down.d/bind9
/etc/network/if-up.d/bind9
/etc/network/if-down.d/bind9
These scripts contain the following call:
rndc reconfig >/dev/null 2>&1 || true
I had an issue on my system that made the named daemon freeze in such
a way that any rndc command would hang forever. Since rndc is called as
part of network interface up/down scripts, it made these scripts hang as
well. As a result, my machine lost its network connection.
Network interface up/down scripts should not have a critical dependency
on some non-critical part of the system (bind9) behaving correctly.
Otherwise it makes the network subsystem exceedingly brittle.
To fix the issue, I suggest replacing the line above with the following
so that the network subsystem will never wait on rndc:
rndc reconfig >/dev/null 2>&1 &
-- System Information:
Debian Release: jessie/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 3.14-1-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/dash
Versions of packages bind9 depends on:
ii adduser 3.113+nmu3
ii bind9utils 1:9.9.5.dfsg-4
ii debconf [debconf-2.0] 1.5.53
ii init-system-helpers 1.19
ii libbind9-90 1:9.9.5.dfsg-4
ii libc6 2.19-6
ii libcap2 1:2.22-1.2
ii libcomerr2 1.42.11-1
ii libdns100 1:9.9.5.dfsg-4
ii libgssapi-krb5-2 1.12.1+dfsg-3
ii libisc95 1:9.9.5.dfsg-4
ii libisccc90 1:9.9.5.dfsg-4
ii libisccfg90 1:9.9.5.dfsg-4
ii libk5crypto3 1.12.1+dfsg-3
ii libkrb5-3 1.12.1+dfsg-3
ii liblwres90 1:9.9.5.dfsg-4
ii libssl1.0.0 1.0.1h-3
ii libxml2 2.9.1+dfsg1-4
ii lsb-base 4.1+Debian13
ii net-tools 1.60-26
ii netbase 5.2
bind9 recommends no packages.
Versions of packages bind9 suggests:
pn bind9-doc <none>
ii knot-dnsutils [dnsutils] 1.5.0-1
ii resolvconf 1.75
pn ufw <none>
-- Configuration Files:
/etc/bind/named.conf.local changed [not included]
/etc/bind/named.conf.options changed [not included]
-- debconf information excluded
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