With this patch the unbound init routines manage resolv.conf if and only if
when unbound will listen on 127.0.0.1#53 and dnsmasq is not.
Also logs some cases where config values are overriden with sane defaults.
Fixes (partially) LEDE FS#785
Fixesopenwrt/packages#4487
Signed-off-by: Paul Oranje <por@xs4all.nl>
Base LEDE/OpenWrt UCI for dnsmasq provides for DNS override in
/etc/config/dhcp. It is desired to be able to use dnsmasq and
Unbound as transparently as possible. Option 'add_extra_dns'
will pull 'domain', 'mxhost', 'srvhost, and 'cname' from base.
netifd/procd have an interaction with DHCPv6/RA on WAN (FS#713).
Minor IP6 parameter updates can cause Unbound reload events every
few minutes. List option 'trigger' selects which interfaces may
cause reload. For example 'lan', 'wan' but not 'wan6'.
Squash other cosmetics.
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
procd interface triggers may be busy. Unbound hard restarts will
flush the cache. This might happen frequently depending on how
interface triggers occur.
Change the procd trigger to reduce occurences. Load this trigger
prior to netifd (START=20), but only truly start Unbound from
the trigger rather than immediately in init. Clean up log entries
in scripts after Unbound, NTP, and DNSSEC are established.
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
Unbound is configured to restart on hotplug/iface but this can result
in numerous restarts at boot. Unbound also has a restart for NTP.
This was observed to generate trouble and even with procd robustness
too many crashes might occur (rare). Unbound would not be running.
Give more care to /var/lib/unbound/root.key during restarts. Use procd
for iface restarts. Check pidof() to wait one more second for Unbound.
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
options 'add_local_fqdn' and 'add_wan_fqdn' can be affected
by race conditions when they are at level 4. Interface name
may not be returned by network tools. The conf file has bad
record formats and Unbound just will not load. Detect this
and fall back to only the host FQDN (level 3).
squash: improve documentation wording and format codes.
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
Read UNBOUND_TXT_DOMAIN from main unbound configuration.
This prevents records to be added into Unbound in the default 'lan' zone.
Signed-off-by: Audric Schiltknecht <storm+github@chemicalstorm.org>
Unbound UCI tries to protect embedded flash from excess
use. Unbound RFC5011 KSK tracking can rewrite root.key
every few minutes to an hour. It also writes and destroys
files in the same directory during the process.
Recommended UCI delays for copying busy work in /var/
back to /etc/ may be too conservative. These are all
changed from 28 to 9 days.
The RFC5011 KSK results were also destroyed by an
init.d restart, even if /var/ is mounted on persistent
storage like USB drive. /var/lib/unbound/root.key is
now preserved during this process, unless a newer key
is installed in /etc/ manually or package update.
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
Unbound 1.6.1 has a few bug fixes for resource leaks,
configuration robustness, compile environment interaction,
and maintaining the trust anchor. The 2017 trust anchor
(DS) is built into unbound and unbound-anchor.
File /etc/unbound/root.key holds 2010/2017 DS record until 2018
https://www.icann.org/resources/pages/ksk-rolloverhttps://www.iana.org/domains/root
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
When for example 'package/net/adblock' and DNSSEC vs NTP robustness
is enabled, significant restart thrashing can occur at boot up. DHCP
lease triggers may be occuring at the same time. Unbounds DNS-DHCP
may be incomplete until new DHCP solicit events. Solve this by
leaving a passive but complete host conf file during lease trigger.
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
Bug fix dhcp4_slaac6 option was adding to all IP6 routes.
Filtering was added to this process to only include addresses
served from "this dhcp interface."
adblock 2.3.0 file output is now detected and automatically
integrated into Unbound local-zones. adblock deposites its
block site zone-files into /var/lib/unbound. If this is not
desired, then disable adblock or reconfigure to avoid Unbound.
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
Unbound+DHCP (server of your choice) should be able to replicate
a lot of what dnsmasq provides. With this change set Unbound
still works with dnsmasq, but also it can work with a plain
DHCP server. Features have been added within the UCI itself
to act like dnsmasq.
- alone: name each interface relative to router hostname
- alone: prevent upstream leakage of your domain and '.local'
- dnsmasq: use dnsmasq UCI to configure forwarding clauses
- dhcp: work with odhcpd as example of companion DHCP-DNS
- dhcp: convert DHCPv4 leases into EUI64 SLAAC for DNS records
- all: enable encrypted remote unbound-control using splice conf
- all: allow user spliced conf-files for hybrid UCI and manual conf
-- 'unbound_srv.conf' will be spliced into the 'server:' clause
-- 'unbound_ext.conf' will add clauses to the end, example 'forward:'
README HOW TO for dnsmasq-in-serial, dnsmasq-in-parallel, and
unbound-with-odhcpd have better/added UCI starters. HOW TO for
including unbound_srv.conf and unbound_ext.conf are added.
Document new UCI: add_local_fqdn, add_wan_fqdn, dhcp4_slaac6,
dhcp_link, domain, and domain_type
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
This is bare minimum change in 'unbound.sh' and
'dnsmasq.sh' to migrate the UCI option set for
more flexibility. The boolean(s) to link to
dnsmasq are being changed to a state to include
odhcpd. It is executable but a small step for
clear change management.
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
The UCI for Unbound already links to dnsmasq, but what
if with Unbound, we want to configure a plain dhcp server.
Most servers can call a script for lease events. That
script can then formulate DNS records and load them
with unbound-control (dependency).
The files added here work with OpenWRT/LEDE odhcpd, such
that it can be run alone. They can be used as examples
for any dhcp server. 'odhcpd.sh' is to be called by
odhcpd when a lease event occurs. 'odhcpd.awk' is called
internal to the shell script. The awk script handles
any tricky reformating that may be required.
/etc/config/dhcp
config odhcpd 'odhcpd'
option leasetrigger '/usr/lib/unbound/odhcpd.sh'
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
If Unbound was disabled and at later time enabled, then it
would operate in DNSSEC less-secure mode. When NTP hotplug
was called, the timestamp file was not updated. This was
found testing Unbound vs other tools (bind, dnsmasq).
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
- UCI to take advantage of "qname-minimisation-strict:"
- UCI to block chaos reponses bind, server, and version
- UCI to limit or prefer recrusion over IP4 or IP6
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
- UCI option dnsmasq_gate_name typo in few locations
- NTP hotplug to check /etc/init.d/unbound not ..dnsmasq
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
- History: prior to package 1.5.10-3 /var/lib/unbound was not used
- History: prior to package 1.5.10-4 no UCI scripts were provided
- Problem: UCI 'option manual_conf 1' only copied unbound.conf and root.key
- Problem: power users that had complex file nests cannot use this
- Fix: README.md includes instructions for /var/lib/unbound jail
- Fix: unbound.sh copies ALL of /etc/unbound for 'option manual_conf 1'
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
-unbound.sh implements the majority of requirements in README.md
-rootzone.sh reloads a small subset for alternate trigger maintenance
-unbound.init sets procd triggers on Unbound and dnsmasq (dhcp) UCI
-two part commit squashed with Makefile included
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
-dnsmasq really provides nice local DHCP-DNS records
-Unbound host records would be clumsy to update
-Unbound can be configured to forward to dnsmasq
-iptools provided to facilitate PTR records
-flexible ipv6 colon notation is a bit complex
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
-DNSSEC needs time, time needs ntp, or power off RTC
-Many consumer routers are cost thrifted without RTC
-Conf "val-override-date: -1" disables time inside DNSSEC
-Need restart as option is not dynamically switchable
-hotplug/ntp is used to set file /var/lib/unbound/unbound.time
-UCI will add or remove option depending on flag-like-file
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
-Patch for /etc/unbound/unbound.conf
--All work done in /var/lib/unbound/
--chroot or jail to /var/lib/unbound/
-Init script points to /usr/lib/unbound.sh
-Makefile to install new scripts in the package
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
-Unbound RFC 5011 is busy and writes frequently
-RFC 5011 creates working files in same directory
-DNSSEC root.key managed in /var/lib/unbound
-Protect against flash ROM wear out in /etc/unbound
-Scripts will copy back every 7 days instead
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
-Rebind to new interfaces cleanly
-Detach from old interfaces cleanly
-Some conf options do not reload dynamically
-Unbound grows some and this will shrink it
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
-Remove interlaced configuration changes
--Less sensitive to upstream example.conf changes
--Easier to read patch-of-patch work for maintenance
-Use MEMORY CONTROL EXAMPLE from http://unbound.net/
--Review and rework with respect to previous pacakge
--Effectively the same configuration as previous package
-Disable DNSSEC by default due to real-time chicken-n-egg
--Many OpenWrt target devices have no power-off clock (reboot)
--User choice of work around should be conscious
--Initial install should not fail reboot with DNSSEC default
-Add some defaults explicitly to prevent surprises
Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
Until now unbound was always running as root by default. A DNS resolver can
easily run under a non-privileged user.
Signed-off-by: Michael Hanselmann <public@hansmi.ch>
The commands aliased by $(INSTALL_BIN) and $(INSTALL_DATA) set good
permissions, unlike a raw file copy.
Signed-off-by: Michael Hanselmann <public@hansmi.ch>
The custom list of DNS root servers provided with the package is not necessary.
Unbound ships with a built-in list.
Signed-off-by: Michael Hanselmann <public@hansmi.ch>
This patch enables support for validating ECDSA signatures, which
are being deployed more and more in DNSSEC.
Proper validating can be tested by observing the AD flag in following
query (courtesy of Olafur Gudmundsson, CloudFlare):
$ dig ds-4.alg-14-nsec.dnssec-test.org
Signed-off-by: Ondřej Caletka <ondrej@caletka.cz>
Eric Luehrsen
Paul Oranje
Audric Schiltknecht
Hannu Nyman
Stijn Segers
Michael Hanselmann
Borromini
Ondřej Caletka