Re: Sub interface not working in Debian 8

[Xen <list@xenhideout.nl>]

Muhammad Yousuf Khan schreef op 27-12-2016 12:22:

> can you guys please guide what is going on . in old Debian version i
> do this with no problem sub interfaces were very easy task. but here i
> invest the whole day.

I must say I have run into many problems on my own machine but never 
this one.

Are you sure your gateway recognises your secondary IP?

I even have 2 IPs on such an alias and they all work fine:

iface eth0 inet manual
  pre-up ip link set eth0 up

iface eth0:0 inet dhcp

iface eth0:1 inet static
  address 149.x.x.127
  netmask 255.255.255.0

In my case I do additional routing:

ip rule add from 149.x.x.127 (that's the secondary) lookup 2
ip route add default via 149.x.x.1 (gateway address for the second IP) 
table 2