Linode with 2 IPs - nginx based

I would appreciate if anyone could help me out with this.

Using:

• linode 512

• ubuntu 9.10

• nginx+fcgi

• default dhcp

• using http://firehol.sourceforge.net for security (easy config)

• default linode IP: 88.88.88.88

• brand-new linode IP (not private IP): 99.99.99.99

• default gateway IP for this linode: 77.77.77.77

• second gateway IP for this linode: 78.78.78.78

My domain is: example.com currently on 88.88.88.88

and things like http://88.88.88.88/hello.php are working

(example.com/hello.php & 88.88.88.88/hello.php = same)

I have a new domain: example.net

I would like to run this domain on the 2nd IP (99.99.99.99)

and http://99.99.99.99/hello2.php should work

but http://99.99.99.99/hello.php should return 404

step 0:

get new IP using Linode manager

step 1:

/etc/network/interfaces
-------
auto lo
iface lo inet loopback

auto eth0 eth0:0

iface eth0 inet static
 address 88.88.88.88
 netmask 255.255.255.0
 gateway 77.77.77.77

iface eth0:0 inet static
 address 99.99.99.99
 netmask 255.255.255.0
 gateway 78.78.78.78

step 2:

/etc/init.d/networking restart

step 3:

#http://forum.nginx.org/read.php?2,2479

server {
    #default linode IP
    listen 88.88.88.88:80;
    ...
}

server {
    #second linode IP
    listen 99.99.99.99:80;
    ...
}

step 4:

reboot

step 5:

#ping all ips and gateways
ping 88.88.88.88
ping 99.99.99.99
ping 77.77.77.77
ping 78.78.78.78

step 6:

...

Not working.