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@gerhard
Created June 2, 2011 15:15
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Additional IPs not working as expected on Ubuntu 10.04.02
# 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 95.211.14.193
netmask 255.255.255.192
gateway 95.211.14.254
auto eth0:0
iface eth0:0 inet static
address 95.211.14.195
netmask 255.255.255.192
auto eth0:1
iface eth0:1 inet static
address 95.211.14.197
netmask 255.255.255.192
eth0 Link encap:Ethernet HWaddr 78:e3:b5:fd:b0:2e
inet addr:95.211.14.193 Bcast:95.211.14.255 Mask:255.255.255.192
inet6 addr: fe80::7ae3:b5ff:fefd:b02e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2915333 errors:0 dropped:0 overruns:0 frame:0
TX packets:1427562 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3479484391 (3.4 GB) TX bytes:411132579 (411.1 MB)
Interrupt:16
eth0:0 Link encap:Ethernet HWaddr 78:e3:b5:fd:b0:2e
inet addr:95.211.14.195 Bcast:95.211.14.255 Mask:255.255.255.192
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:16
eth0:1 Link encap:Ethernet HWaddr 78:e3:b5:fd:b0:2e
inet addr:95.211.14.197 Bcast:95.211.14.255 Mask:255.255.255.192
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:16
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:16436 Metric:1
RX packets:166925 errors:0 dropped:0 overruns:0 frame:0
TX packets:166925 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:19368719 (19.3 MB) TX bytes:19368719 (19.3 MB)
root@lexi:~# ifup eth0:0
ifup: interface eth0:0 already configured
root@lexi:~# nmap -T5 -sV -PN 95.211.14.195
Starting Nmap 5.00 ( http://nmap.org ) at 2011-06-09 01:44 CEST
Nmap done: 1 IP address (0 hosts up) scanned in 0.39 seconds
root@lexi:~# ifup eth0
ifup: interface eth0 already configured
root@lexi:~# nmap -T5 -sV -PN 95.211.14.193
Starting Nmap 5.00 ( http://nmap.org ) at 2011-06-09 01:44 CEST
Interesting ports on lexi.lazu.co.uk (95.211.14.193):
Not shown: 996 closed ports
PORT STATE SERVICE VERSION
22/tcp open ssh OpenSSH 5.3p1 Debian 3ubuntu6 (protocol 2.0)
25/tcp open smtp Postfix smtpd
80/tcp open http Apache httpd 2
443/tcp open http Apache httpd 2
Service Info: Host: localhost; OS: Linux
Service detection performed. Please report any incorrect results at http://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 6.24 seconds
Calista ➜ code ping -c 2 95.211.14.195
PING 95.211.14.195 (95.211.14.195): 56 data bytes
64 bytes from 95.211.14.195: icmp_seq=0 ttl=55 time=27.872 ms
64 bytes from 95.211.14.195: icmp_seq=1 ttl=55 time=43.412 ms
--- 95.211.14.195 ping statistics ---
2 packets transmitted, 2 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 27.872/35.642/43.412/7.770 ms
Calista ➜ code ssh root@95.211.14.195 -vvv
OpenSSH_5.2p1, OpenSSL 0.9.8l 5 Nov 2009
debug1: Reading configuration data /Users/gerhard/.ssh/config
debug1: Reading configuration data /etc/ssh_config
debug2: ssh_connect: needpriv 0
debug1: Connecting to 95.211.14.195 [95.211.14.195] port 22.
### AND IT JUST HANGS... NOTHING IN THE SERVER LOGS
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
95.211.14.192 0.0.0.0 255.255.255.192 U 0 0 0 eth0
0.0.0.0 95.211.14.254 0.0.0.0 UG 100 0 0 eth0
Status: active
To Action From
-- ------ ----
21/tcp ALLOW Anywhere
80 ALLOW Anywhere
443 ALLOW Anywhere
22 ALLOW Anywhere
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