On 12/03/14 13:24, fish wrote: > Public bug reported: > > Hi, > > I'm running dnsmasq in a (docker) container. If I tried to start dnsmasq > without arguments and it failed with: > > dnsmasq: setting capabilities failed: Operation not permitted > > Guess this is expected because the container has limited privileges. The > odd thing is, if I start it with --no-daemon it starts just fine, it > receives the DISCOVERs and says it's sending the OFFERS. The log shows: > > dnsmasq-dhcp: DHCPDISCOVER(eth1) a4:ba:db:0a:3f:ef > dnsmasq-dhcp: DHCPOFFER(eth1) 192.168.101.183 a4:ba:db:0a:3f:ef > > But according to tcpdump it's trying to send this as unicast which isn't > possible (I only see arp requests to resolve 192.168.101.183). This is > a strace when answering the request: > https://gist.github.com/discordianfish/687f4cb5756c9cf3d841 > > No idea whether this is just a obscure bug or dnsmasq trying to be > smart. So guess in the end it needs just better error handling/checks > for capabilities. > > ** Affects: dnsmasq (Ubuntu) > Importance: Undecided > Status: New >
>From the dnsmasq man page: -d, --no-daemon Debug mode: don't fork to the background, don't write a pid file, don't change user id, generate a complete cache dump on receipt on SIGUSR1, log to stderr as well as syslog, don't fork new processes to handle TCP queries. Note that this option is for use in debugging only, to stop dnsmasq daemonising in production, use -k. Note last sentence. Cheers, Simon. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1291369 Title: dnsmasq can't send OFFERS missing capabilities but doesn't check To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/1291369/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
