Confirmed in trusty, xenial and zesty. ({t,x,z}-ipv6 are just containers launched from the latest images)
$ lxc exec t-ipv6 cat /etc/hosts 127.0.0.1 localhost
# The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters ff02::3 ip6-allhosts
$ lxc exec x-ipv6 cat /etc/hosts 127.0.0.1 localhost
$ lxc exec z-ipv6 cat /etc/hosts 127.0.0.1 localhost
Confirmed in trusty, xenial and zesty. ({t,x,z}-ipv6 are just containers launched from the latest images)
$ lxc exec t-ipv6 cat /etc/hosts
127.0.0.1 localhost
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
$ lxc exec x-ipv6 cat /etc/hosts
127.0.0.1 localhost
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
$ lxc exec z-ipv6 cat /etc/hosts
127.0.0.1 localhost
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts