networking - sub-interface/vlan not reachable - Ask Ubuntu


i not able ping sub-interface/vlan ip address configured in ubuntu (14.04 or 16.04). below configuration.

can please let me know if missing something. googled , not able find solution. network configuration because, same vlan working centos.

cat /etc/network/interface

auto lo iface lo inet loopback  auto ens160 iface ens160 inet manual  auto ens160.20 iface ens160.20 inet static address 172.18.135.23 gateway 172.18.135.254 netmask 255.255.252.0 vlan-raw-device ens160

cat /etc/modules

loop lp rtc bonding 8021q

dpkg -l | grep vlan

ii  vlan                               1.9-3.2ubuntu1.16.04.1

thanks in advance.


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