As told in the original message, there was no problem with a dnsmasq-2.72-3 version of Debian 8. I downloaded the dnsmasq source version 2.76, compile it and problem is gone.
You can close this bug. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to dnsmasq in Ubuntu. https://bugs.launchpad.net/bugs/1682136 Title: dnsmasq bad hex constant with 2 mac addresses but not true Status in dnsmasq package in Ubuntu: Incomplete Bug description: Following line of dnsmasq.conf will not allow dnsmasq to start giving error "bad hex constant at line x in /etc/dnsmasq.conf" and this despite the fact that there is no error in mac addresses. dhcp- host=a8:6b:ad:4b:83:bf,44:a8:42:fb:a2:df,172.16.30.47,w10-assist1,net:ordi,infinite,set:ordi With only one of those two mac addresses, all is good, so there is no error in mac addresses. In the dnsmasq.conf they are other dhcp-host with multiple mac addresses like dhcp- host=a8:6b:ad:4a:d9:d3,44:a8:42:fb:a2:85,00:24:9b:12:71:be,172.16.30.43,w10-pierre,net:ordi,infinite,set:ordi and they are not rejected. When copying the default configuration line in a dnsmasq-2.72-3 of Debian 8.7, no problem. Description: Ubuntu 12.04.5 LTS Release: 12.04 dnsmasq: Installé : 2.59-4ubuntu0.2 Candidat : 2.59-4ubuntu0.2 Table de version : *** 2.59-4ubuntu0.2 0 500 http://fr.archive.ubuntu.com/ubuntu/ precise-updates/universe amd64 Packages 500 http://security.ubuntu.com/ubuntu/ precise-security/universe amd64 Packages 100 /var/lib/dpkg/status 2.59-4 0 500 http://fr.archive.ubuntu.com/ubuntu/ precise/universe amd64 Packages ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: dnsmasq 2.59-4ubuntu0.2 [modified: etc/dnsmasq.conf] ProcVersionSignature: Ubuntu 3.13.0-116.163~precise1-generic 3.13.11-ckt39 Uname: Linux 3.13.0-116-generic x86_64 ApportVersion: 2.0.1-0ubuntu17.15 Architecture: amd64 Date: Wed Apr 12 15:25:20 2017 MarkForUpload: True PackageArchitecture: all SourcePackage: dnsmasq UpgradeStatus: No upgrade log present (probably fresh install) mtime.conffile..etc.dnsmasq.conf: 2017-04-12T12:04:33.732724 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/1682136/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp