I’m using srsLTE-emane (https://github.com/adjacentlink/srsLTE-emane), an open source software that emulates LTE Network, and I have a problem with DNS resolution in LXC container.
I’m running a demonstration (found on https://github.com/adjacentlink/emane-model-lte.git) made by three containers: ue-02 (the mobile phone), enb-21 (the radio base station) and epc-01 (the core network of LTE). I’m able to ping any IP address from ue-02 (for example 184.108.40.206):
root@ue-02:~# ping 220.127.116.11 -c 5 PING 18.104.22.168 (22.214.171.124) 56(84) bytes of data. 64 bytes from 126.96.36.199: icmp_seq=1 ttl=50 time=96.8 ms 64 bytes from 188.8.131.52: icmp_seq=2 ttl=50 time=95.1 ms 64 bytes from 184.108.40.206: icmp_seq=3 ttl=50 time=94.5 ms 64 bytes from 220.127.116.11: icmp_seq=4 ttl=50 time=93.0 ms 64 bytes from 18.104.22.168: icmp_seq=5 ttl=50 time=91.8 ms
I’m not able to activate the DNS resolution (where www.repubblica.it is the internet site related to 22.214.171.124):
root@ue-02:~# nslookup www.repubblica.it ;; connection timed out; no servers could be reached root@ue-02:~# LC_ALL=C ping www.repubblica.it ping: www.repubblica.it: Name or service not known
I have read the instructions to modify the file resolv.conf, but these containers don’t have this file: these are a bit different from classical LXC containers. The unique configuration file is lxc.conf.
lxc.uts.name=ue-02 lxc.net.0.type=veth lxc.net.0.name=backchan0 lxc.net.0.flags=up lxc.net.0.link=letce0 lxc.net.0.ipv4.address=10.88.1.2/24 lxc.net.0.veth.pair=aveth.3.0 lxc.net.1.type = empty lxc.net.1.flags=up lxc.console.path = none lxc.tty.max = 1 lxc.pty.max = 128 lxc.cgroup.devices.allow = a lxc.mount.auto = proc sys cgroup lxc.autodev = 1 lxc.hook.autodev = /usr/share/emane-model-lte/demo/two_ues/ue-02/lxc.hook.autodev.sh lxc.apparmor.profile = unconfined
the only differences with lxc.conf of the other two containers are in the name and in the IP addresses.
I have tried to modify the file lxc.conf in /etc/dnsmasq.d-available, adding the line
and also (alternately)
but this did not work.
Someone could help me?
Thank you very much!!