Ubuntu, объединяющая проблему в сеть

Попытка связать/28 с моим выделенным сервером Ubuntu 14.04. Все выглядит хорошим, но я не могу проверить с помощью ping-запросов IP со своего сервера кроме его собственных.82. Я экранирован.

Мой resolv.conf установлен на DNS Google (у меня даже был основной IP сначала, оба не работают).

Мой /etc/network/interfaces:

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
        address xxx.xxx.42.82
        netmask 255.255.255.240
        gateway xxx.xxx.42.81
        # dns-* options are implemented by the resolvconf package, if installed
        dns-nameservers xxx.xxx.42.82

user@ubuntu:~$ ip addr show eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:25:90:3a:c2:36 brd ff:ff:ff:ff:ff:ff
    inet xxx.xxx.42.82/28 brd xxx.xxx.42.95 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::225:90ff:fe3a:c236/64 scope link
       valid_lft forever preferred_lft forever

       user@ubuntu:~$ ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:25:90:3a:c2:36  
          inet addr:xxx.xxx.42.82  Bcast:xxx.xxx.42.95  Mask:255.255.255.240
          inet6 addr: fe80::225:90ff:fe3a:c236/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1988597 errors:0 dropped:1277940 overruns:0 frame:0
          TX packets:562121 errors:198 dropped:0 overruns:0 carrier:198
          collisions:16020 txqueuelen:1000
          RX bytes:281303904 (281.3 MB)  TX bytes:121464307 (121.4 MB)
          Interrupt:16 Memory:fb5e0000-fb600000

Также работал /etc/init.d/networking restart

Попробованный ниже также, все еще не может проверить с помощью ping-запросов ничего кроме.82 основных.

# The primary network interface
auto eth0
iface eth0 inet static
        address xxx.xxx.42.82
        netmask 255.255.255.240
        gateway xxx.xxx.42.81
        # dns-* options are implemented by the resolvconf package, if installed
        dns-nameservers 8.8.8.8

eth0      Link encap:Ethernet  HWaddr 00:25:90:3a:c2:36  
          inet addr:xxx.xxx.42.82  Bcast:xxx.xxx.42.95  Mask:255.255.255.240
          inet6 addr: fe80::225:90ff:fe3a:c236/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:14425 errors:0 dropped:12092 overruns:0 frame:0
          TX packets:911 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1118063 (1.1 MB)  TX bytes:212166 (212.1 KB)
          Interrupt:16 Memory:fb5e0000-fb600000 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:1210 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1210 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:66658 (66.6 KB)  TX bytes:66658 (66.6 KB)

ОБНОВЛЕНИЕ ДЛЯ GUNTBERT

user@ubuntu:~$ sudo ip addr add xxx.xxx.42.80/28 dev eth0
user@ubuntu:~$ ip addr show 
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:25:90:3a:c2:36 brd ff:ff:ff:ff:ff:ff
    inet xxx.xxx.42.82/28 brd xxx.xxx.42.95 scope global eth0
       valid_lft forever preferred_lft forever
    inet xxx.xxx.42.80/28 scope global secondary eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::225:90ff:fe3a:c236/64 scope link 
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 00:25:90:3a:c2:37 brd ff:ff:ff:ff:ff:ff