dnsmasq-full 2.78-6 is missing DHCP server functionality (regression)

[petterjohanolsen]

Package: dnsmasq-full 2.78-6

• expected behavior: dnsmasq-full should include DHCP server (2.77-12 works as expected)
• actual behavior: when dnsmasq option "dhcp-range" is specified in /opt/etc/dnsmasq.conf, dnsmasq quits with the following error:

dnsmasq: unsupported option (check that dnsmasq was compiled with DHCP/TFTP/DNSSEC/DBus support) at line xxx of /opt/etc/dnsmasq.conf

Platform: x86_64 (QNAP 4.3.4, TS-453S Pro)

Package feed: http://pkg.entware.net/binaries/x86-64

[petterjohanolsen]

A temporary workaround is to install a previous version:

opkg install http://pkg.entware.net/binaries/x86-64/archive/dnsmasq-full_2.77-12_x86-64.ipk --force-downgrade

[zyxmon]

1. I strongly recommend to use Entware-3x, not Entware-ng on your NAS.
2. I tried to run dnsmasq on TS-253B with dhcp server enabled, but got dnsmasq: failed to bind DHCP server socket: Address already in use, because of dhcp server in firmware.
3. I've tried dnsmasq on an arm NAS running QTS 4,3,4 with dhcp server enabled with no problems.

Please switch to Entware-3x and give more details how to run dnsmasq on your NAS here - https://github.com/Entware-for-kernel-3x/Entware-ng-3x/issues

[zyxmon]

We have tested dnsmasq on Entware-ng (mipsel) - it starts without problem. Probably something wrong with x64 build. As for Entware-3x and x64 - dnsmasq -v Dnsmasq version 2.78 Copyright (c) 2000-2017 Simon Kelley Compile time options: IPv6 GNU-getopt no-RTC no-DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP conntrack ipset auth no-DNSSEC no-ID loop-detect inotify. Entware-ng uses toolchain based on 2.6 linux kernels. Some new syscalls are absent. Some new packages fail to compile on Entware-ng or may have runtime problems. The best solution is to switch to Entware-3x. If there is still a bug - it will be easier to solve it for Entware-3x.

[mackowiakp]

OK, but it worked in previous version of Entware package. Is it possible do downgrade dnsmasq to previous version?

[petterjohanolsen]

Looks like DHCP is not compiled in for the x64 version:

[~] # uname -a
Linux qnap 4.2.8 #1 SMP Sat Dec 30 06:25:19 CST 2017 x86_64 GNU/Linux

[~] # dnsmasq -v
Dnsmasq version 2.78  Copyright (c) 2000-2017 Simon Kelley
Compile time options: IPv6 GNU-getopt no-RTC no-DBus no-i18n no-IDN no-DHCP no-Lua TFTP conntrack ipset auth no-DNSSEC no-ID loop-detect inotify

@mackowiakp: see my previous post for how to manually downgrade. It will be lost after automatic upgrade, though.

[mackowiakp]

Yep. I downgrade dnsmasq to the version taken from http://entware.zyxmon.org/binaries/x86-64/archive/ and now it works OK. From my point of view - problem solved

[zyxmon]

The issue is fixed in Entware-ng. There was no issue in Entware-3x. Repo will be reindexed in 10 minutes.

Please run opkg update & opkg upgrade