Just did a quick test with a clean install of zesty + libnss-mdns Installs with a correct ordering of resolvers in /etc/nsswitch.conf and works correctly.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1641328 Title: Ordering of mdns4_minimal and resolve in /etc/nsswitch.conf causes mDNS lookups to fail -- breaks network printing Status in nss-mdns package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Confirmed Bug description: (See also libnss-resolve:amd64 231-9ubuntu1 amd64 nss module to resolve names via systemd-resolved) # fresh install of yakkety mtearle@liberation:/etc$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.10 Release: 16.10 Codename: yakkety # package details mtearle@liberation:~$ apt-cache policy libnss-resolve libnss-resolve: Installed: 231-9ubuntu1 Candidate: 231-9ubuntu1 Version table: *** 231-9ubuntu1 500 500 http://mirror.rackspace.com/ubuntu yakkety-updates/main amd64 Packages 100 /var/lib/dpkg/status 231-9git1 500 500 http://mirror.rackspace.com/ubuntu yakkety/main amd64 Packages mtearle@liberation:~$ apt-cache policy systemd systemd: Installed: 231-9ubuntu1 Candidate: 231-9ubuntu1 Version table: *** 231-9ubuntu1 500 500 http://mirror.rackspace.com/ubuntu yakkety-updates/main amd64 Packages 100 /var/lib/dpkg/status 231-9git1 500 500 http://mirror.rackspace.com/ubuntu yakkety/main amd64 Packages # attempt to ping VM elsewhere on network with mDNS hostname mtearle@liberation:/etc$ ping bazzavan.local ping: bazzavan.local: Name or service not known # can find both ipv4 and ipv6 addresses for the host mtearle@liberation:/etc$ avahi-resolve-host-name bazzavan.local bazzavan.local fe80::a00:27ff:fea5:3f51 mtearle@liberation:/etc$ avahi-resolve-host-name -4 bazzavan.local bazzavan.local 172.16.44.48 # can ping it mtearle@liberation:/etc$ ping -c 1 172.16.44.48 PING 172.16.44.48 (172.16.44.48) 56(84) bytes of data. 64 bytes from 172.16.44.48: icmp_seq=1 ttl=64 time=0.265 ms --- 172.16.44.48 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.265/0.265/0.265/0.000 ms # original ordering mtearle@liberation:/etc$ grep hosts /etc/nsswitch.conf hosts: files resolve [!UNAVAIL=return] mdns4_minimal [NOTFOUND=return] dns # go away and edit /etc/nsswitch.conf # change ordering of resolve and mdns4_minimal mtearle@liberation:/etc$ grep hosts /etc/nsswitch.conf hosts: files mdns4_minimal [NOTFOUND=return] resolve [!UNAVAIL=return] dns # check mdns lookups now work, and it now pings mtearle@liberation:/etc$ ping -c 1 bazzavan.local PING bazzavan.local (172.16.44.48) 56(84) bytes of data. 64 bytes from 172.16.44.48 (172.16.44.48): icmp_seq=1 ttl=64 time=0.161 ms --- bazzavan.local ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.161/0.161/0.161/0.000 ms # check libnss-resolve is still doing its thing mtearle@liberation:/etc$ ping -c 1 localhost.localdomain PING localhost.localdomain(localhost (::1%1)) 56 data bytes 64 bytes from localhost (::1): icmp_seq=1 ttl=64 time=0.016 ms --- localhost.localdomain ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.016/0.016/0.016/0.000 ms To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nss-mdns/+bug/1641328/+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
