But I'm sure I see DHCPv6 leases being issued in the log. let 'kk = (((s + c) / (64 * 1024) + 1) * 64)'; which sets the allocated kernel size. Details are below. During the past few months I have had in my config the normal dnsmasq disabled and dnsmasq-dhcpv6 enabled. 1537864168 b8:27:eb:e6:08:9b 192.168.1.106 * DNS and DHCP configuration for OpenWRT https://wiki.openwrt.org/doc/uci/dhcp The dnsmasq and dhcpd configuration is located in /etc/config/dhcp and controls both DNS and DHCP server options. option expandhosts '1' Some of the builds have worked, some have not, even regarding version 34105. Powered by Discourse, best viewed with JavaScript enabled, Configuring DNS using dnsmasq DHCP and dynamic IPv6 firewall rules, Configure dnsmasq to provide DHCP and DNS. The script supports both IPv4 and IPv6 rules. Visit the Trac open source project athttp://trac.edgewall.com/, This ticket has been modified since you started editing. Have a question about this project? I will rebuild 34085 once again from scratch and retry. But if youre not much into advanced configuration and just want to completely block out some network hosts from reaching the internet (and hence phoning home) then its a lot simpler to do this directly from the DHCP and simply leave them without a DNS and gateway configuration. Changeset r34106 (isolating stamp files for build variants) has apparently broken dnsmasq package's dhcpv6 variant. option authoritative '1' Jow is probably right that it is not about that package. It is designed to be lightweight and have a small footprint, suitable for resource constrained routers and firewalls. 1537850651 00:18:39:43:3b:49 192.168.1.104 01:00:18:39:43:3b:49 it has also been fairly reliable for me for several months. There are my options to dnsmasq that aren't available through the standard configuration files. option start '100' It was a bit of a process and quite a steep learning curve, so I figured I'd document what I did here on the forums in case anybody else finds themselves wanting this feature. 1537854905 4c:605d:8e:e3 192.168.1.116 * * It looks like including dnsmasq-dhcpv6 variant after r34106 causes the router not to boot up. 1537868050 c0:c1:c0:4b:ca:b9 192.168.1.103 * A new Flyspray task has been opened. option ra_management '1' The problem is there for several WNDR3700/3800 users, but it is probably something related to invalid lzma compressed images instead of package stamps. errors are returned, but in most cases just LZMA_RESULT_DATA_ERROR is config dnsmasq Hopefully that will give some insights. opkg_install_cmd: Cannot install package dnsmasq-dhcpv6. https://lists.openwrt.org/pipermail/openwrt-devel/2012-November/thread.html#17445 option dnssec '1' dhcp: http://linux.die.net/man/1/lzma dnsmasq-dhcpv6 is visible in menuconfig next to normal plain dnsmasq. And that has worked ok. After r34106 that combination stops the router from booting. 1537867042 c4:1c:ff:df:2a:6b 192.168.1.227 * This website uses cookies. THIS IS AN AUTOMATED MESSAGE, DO NOT REPLY. I fetched wndr3800 sources from Netgear and extracted the u-boot part here: 1537853529 ac:22:0b:e2:8d:8b 192.168.1.229 -cca1d8d466379174 01:ac:22:0b:e2:8d:8b Note: DHCP is handled by unbound with the help of odhcpd.dnsmasq is not used (or even installed for that matter). I will attempt to increase the buffer set in Makefile and try rebuilding tonight. Every received DNS query not currently in cache is forwarded to the upstream DNS servers. I then modified the ar71xx image makefile and removed those non-standard compression parameters from the lzma command line. 1537857704 00:26:2d:00:84:5b 192.168.1.100 01:00:26:2d:00:84:5b option ra 'server' I had to de-brick it with a TFTP flash to get it back to running order. By Edgewall Software. I have also tried having both enabled, but that does not work either. Hang on, odhcpd? Reading whole flash contents from /dev/mtd and comparing to the original image? http://nbd.name/gitweb.cgi?p=openwrt.git;a=commitdiff;h=6fb33f05da8ff895875cb8d98a7c18e9c606e205. Both versions worked in both of my routers. The dnsmasq DHCP server supports additional custom configuration values: Except where otherwise licensed or credited, information, How to serve custom DHCP configuration with OpenWRTs dnsmasq, How to update OpenWRT while retaining existing configuration and all custom packages, Using a DS1302 Real Time Clock module on Raspberry PI, Recover from a broken rpmdb and missing rpm/Packages in CentOS, How to add (experimental) sensors support for IT8665E in CentOS, How to disable/remove unwanted apps from Android (no root), How to disable/uninstall problematic Magisk modules, Gigabyte motherboards model naming scheme, How to tweak Samba on ASUSWRT with both public and protected folders, Obtaining administrator access on Huawei HG8247H, WD hard drives jumper settings and SATA 1.5 Gbps limit, Western Digital (WD) Hard drive model numbers format, DVB-C TV on Raspberry PI with LibreELEC/Kodi, Tarja Turunen 360 Degrees Tour (23.01.2020). Based on the line number 547, the error is probably coming quite from the end I threw that away so I can't verify my assumption. But the router does not start after the flash. There are times when you need to filter out what some hosts in the network can or cannot do. I have managed to set up DNS on my router without the need for static IP addresses using dnsmasq as the main DHCP client. option domainneeded '1' Dictionary size will stay at the default 23 bits for the other routers. Once this is all set up, you should be able to dig @[router_ip] AAAA [hostname].home.example.com. Alternatively, the new Virtualbox version 4.2.4 screws things up. I am thinking about alternative explanations, and the first that comes into mind is the current ar71xx/wndr3700 kernel size optimization in the build process. http://koti.welho.com/hnyman1/Openwrt/trunk_error_does_not_boot/Netgear3800_uboot.zip. option domain 'lan' Mon Sep 24 09:06:59 2018 daemon.warn odhcpd[1529]: DHCPV6 RENEW IA_NA from 00010001232af947bcaec50ff2b3 on br-lan: ok 2601:601:9280:2081::102/128. Request an /56-prefix using dhcpv6-pd and configure a prefix delegation; Set up dnsmasq to handle router advertisement and dhcpv6 along side the regular dhcp for IPv4; And then covering some basics. The PXE system is a full PXE server, supporting netboot menus and multiple architecture support. So no clue from the error number. root@OpenWrt:~# cat /etc/config/dhcp config dnsmasq option domainneeded '1' option boguspriv '1' option filterwin2k '0' option localise_queries '1' option rebind_protection '1' option rebind_localhost '1' option local '/lan/' option domain 'lan' option expandhosts '1' option nonegcache '0' option authoritative '1' option readethers '1' option leasefile '/tmp/dhcp.leases' option resolvfile . There are several places where It sets the size based on the estimation size, it first calculates the used 64k blocks and rounds upward to the next 64 kB size. If the prefix were to change, your existing firewall port forwards for IPv6 will be crippled until you manually re-set them at some point. And that booting difference sounds strange. In particular, on my router both DNS and DHCP are handled by unbound. Then I built 34085 and it failed in both routers. When the router "did not boot", it started the boot process but then got stuck in the middle, just the power led slowly blinking. After r29406 an "estimation version" of the kernel is built first, its size is assessed and then the final kernel is built with the size set by the estimation. Windows doesn't seem to be affected. It might be theoretically possible, that the parameter create a lzma version that the u-boot chokes on. This issue is probably due to my router handling DNS/DHCP different than the standard openWrt setup. By default, there are no scripts here. By using the website, you agree with storing cookies on your computer. Now we need to edit some of the OpenWRT configuration files. option limit '150' And wireshark does not show the UDP packages with failsafe trigger messages. Except where otherwise noted, content on this wiki is licensed under the following license:CC Attribution-Share Alike 4.0 International. option rebind_localhost '1' Restart your dnsmasq server to activate the new settings and verify that your clients successfully receieve IPv6 addresses. several conflicting dnsmasq variants. "Active DHCPv6 Leases" on status page is empty if system is running dnsmasq-full. Is there any good way to check the flash quality? Sign in I was unable to connect to the router with telnet or SSH, so there is no bootlog available. I checked some of the the "bad builds" with a hex editor, but there are a few dozens of 00 bytes at the end of the kernel area, so kernel size overflow is not the reason. 1537868184 00:e0:4c:36:e9:17 192.168.1.112 * Well occasionally send you account related emails. ### SQUASHFS LOAD ERROR<0> for image! 4 # This is free software, licensed under the GNU General Public License v2. returns 0 for success and 1 for most errors. option dhcpv6 'server' Dnsmasq, however does provide such callbacks making automatic updating of firewall rules a relative breeze. 1537871330 64:51:06:69:ba:09 192.168.1.101 01:64:51:06:69:ba:09 Already on GitHub? Instead, we'll want to install dnsmasq-full opkg update && opkg install dnsmasq-full I really fail to see how a broken dnsmasq-dhcpv6 would prevent the router from booting. generated lzma encoded file. Looks like badly confused build config in .config, as you are trying to install e.g. Of course, if you change all instances of home.example.com to a real domain and set up some glue records you can get to all the devices from the outside (provided you have port forwards set, of course). Self-registration in the wiki has been disabled. Restart your dnsmasq server to activate the new settings and verify that your clients successfully receieve IPv6 addresses. Sections This wasn't an issue on any of the LEDE 17 versions but has been an issue on the OpenWrt 18 versions. I built 34036 and 34066 fully from scratch and they both worked both in v1 and v2. It works but it's not the most graceful solution. The firmware gets built normally and there is no apparent fault in the build process. option localservice '1' If you do not agree leave the website. dnsmasq-dhcpv6 looks a bit strange compared to most packages, as it tries to be a variant instead of being an add-on toggle to decide on inclusion of dhcpv6 functionality in the main package. CC Attribution-Share Alike 4.0 International. Yup, removing odhcpd-ipv6only has corrected the issue. As my kernel is 13.994 x 64k, no buffer gets actually added as (13.994 gets rounded down to 13, then 1 is added, and 14.00 is the final about of 64k blocks used.). 1537861626 0c:b2:b7:45:6c:b4 192.168.3.172 -0B3E 01:0c:b2:b7:45:6c:b4 The DHCP subsystem supports DHCPv4, DHCPv6, BOOTP and PXE. option leasetime '12h' I just didn't have to do this with LEDE V17. (I made the last build without clean, as it was supposed change just the image creation), Read about the lzma/xz memory consumption here: dnsmasq can also be configured to cache DNS queries for improved DNS lookup speeds to previously visited sites. option limit '150' I have built today several builds with identical config. It seems I'm lying, I don't see any DHCPv6 leases. See discussion at openwrt-devel and forum: Next status will be 'reopened'. Dnsmasq serves as a downstream caching DNS server advertising itself to DHCP clients. When I receive the serial port converter, I will test my 3700v1 and see the boot log what it says. option localise_queries '1' First we'll add a firewall rule to be dynamically updated: Upon a new or renewed lease, Dnsmasq calls the script /usr/lib/dnsmasq/dhcp-script.sh, which, in turn calls /sbin/hotplug-call dhcp (after setting up an environment). When the boot fails, the router answers to ping at 192.168.1.1, but does not answer to any connection attempt with telnet or ssh. $(STAGING_DIR_HOST)/bin/lzma e $(1) -lc1 -lp2 -pb2 -d20 $(2). Let's add one: This script simply does a sanity check to ensure we're updating the firewall rule to the correct host by matching the hostname and the DUID. It looks like including dnsmasq-dhcpv6 variant after r34106 causes the router not to boot up. of the source file, possibly from this function: That would suggest that the error is related to the structure of the Also you acknowledge that you have read and understand our Privacy Policy. dnsmasq's dhcpv6 variant got introduced by r32764. option nonwildcard '1' list dhcp_option '252,"\n"', config dhcp 'wan' Can you please attach the output of scripts/diffconfig.sh of a config that triggers this problem? Then, it calls a script that I've stored in /usr/sbin/update-uci-firewall-rule. Configure dnsmasq to provide DHCP and DNS Bonus: Dynamic IPv6 firewall rules Install Packages The first step is to install the required packages. WNDR3700-trunk-r34105-2012-11-11-1841.diffconfig. 1537839435 d0:13:fd:64:d9:db 192.168.1.114 * 01:d0:13:fd:64:d9:db The problem with odhcpd is that it doesn't provide script callbacks that will notify of new or renewed DHCP leases. So, we need to add some sections to the /etc/dnsmasq.conf file that contains the remainder of the configuration. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Regards, Jim Instead, we'll want to install dnsmasq-full, For testing purposes, we may also want to install the dig command. Instructions Static leases LuCI DHCPand DNS Static Leases Add a fixed IPv4address 192.168.1.22and name mydesktopfor a machine with the MAC address 00:11:22:33:44:55. uci add dhcp host When you have a router running OpenWRT this can be done at the firewall level. But the router does not start after the flash. One supporting factor for this line of reasoning is that there was one firmware version, the first with which I noticed this problem, where I had succesfully flashed my 3700v1, but that then failed in a 3700v2, although it had been built on the same compilation run. returned, and that is 1. (Alternative reason might be something wrong in image generation.). ), overall it's not a terribly painful process. I stopped the u-boot boot process with keyboard and tried a few commands in u-boot. I have uploaded the build r34174-2012-11-12-2328 to http://koti.welho.com/hnyman1/Openwrt/trunk_error_does_not_boot/ , so if somebody wants to test the build with a v1, please do so. You signed in with another tab or window. lucenera January 14, 2019, 8:18pm #5 I followed the Github page of the Stubby package to configure DNS on TLS. Otherwise the system is working fine, I can see in DHCPv6 leases being issued. option local '/lan/' E-mail address and user name can be saved in the Preferences. The text was updated successfully, but these errors were encountered: Please provide your /etc/config/dhcp and a scrubbed example of /tmp/dhcp.leases from your setup. I have already built newest trunk 34245 and it works both in my v1 and v2 routers. option ra 'server' 1537850779 04:5d:4b:49:16:32 192.168.1.171 * 01:04:5d:4b:49:16:32 I guess that router somehow does not boot properly from u-boot to kernel, or something like that. If nobody else starts complaining about similar issues, this might be something specific to my buildhost :-( My build host is Ubuntu 12.04 x64 in Virtualbox, but I have used the same machine to build Openwrt since April 4-5 times per week, so it sounds strange that it would have broken down now. So that some bit does not get toggled by flashing any more, and it randomly depends on the firmware image, if the bit is right. 1537871020 a0:6a:44:52:89:03 192.168.1.118 * 01:a0:6a:44:52:89:03 First, we have to turn off odhcpd and tweak a parameter of dnsmasq. It would be helpful if you could attach serial and capture the bootlog of the device failing to boot. I have flashed both routers over 100 times, but that should not be too much for the flash chip, should it? I have been unable to determine a clear reason to create failing/booting images, and I have used the vanilla dnsmasq today (with no dhcpv6 support). 1537853508 18:b4:30:be:9a:b0 192.168.3.120 01:18:b4:30:be:9a:b0, Mon Sep 24 09:06:59 2018 daemon.notice odhcpd[1529]: Got DHCPv6 request option readethers '1' 1537839170 e0:4f:43:d9:e6:d7 192.168.3.186 * option dnsseccheckunsigned '1', config dhcp 'lan' 1537856699 70:5a:b6:a7:51:9f 192.168.1.230 3 01:70:5a:b6:a7:51:9f Thank you for leading me to discover the solution! # dnsmasq --help dhcp known dhcp options: 1 netmask 2 time-offset 3 router 6 dns-server 7 log-server 9 lpr-server 13 boot-file-size 15 domain-name 16 swap-server 17 root-path 18 extension-path 19 ip-forward-enable 20 non-local-source-routing 21 policy-filter 22 max-datagram-reassembly 23 default-ttl 26 mtu 27 all-subnets-local
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