Re: [gentoo-user] IP aliasing problem

[Stroller]

On 6 Oct 2010, at 23:17, Grant wrote:

>>> ...I have 5 usable IPs from my host and I've defined 2 of them in /etc/conf.d/net like this:
>>>
>>> config_eth0=(
>>>        "1.2.3.1 netmask 255.255.255.0"
>>>        "1.2.3.2 netmask 255.255.255.0"
>>> )
>>>
>>> My apache2 config is not working as expected and I think its due to a
>>> networking problem because eth0:1 reports no RX or TX stats:
>>>
>>> # ifconfig
>>> eth0      Link encap:Ethernet  HWaddr [removed]
>>>          inet addr:1.2.3.1  Bcast:[removed]  Mask:255.255.255.0
>>>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>>          RX packets:46047 errors:0 dropped:0 overruns:0 frame:0
>>>          TX packets:65703 errors:0 dropped:0 overruns:0 carrier:0
>>>          collisions:0 txqueuelen:1000
>>>          RX bytes:6131194 (5.8 MiB)  TX bytes:82568335 (78.7 MiB)
>>>          Interrupt:40
>>>
>>> eth0:1    Link encap:Ethernet  HWaddr [removed]
>>>          inet addr:1.2.3.2  Bcast:[removed]  Mask:255.255.255.0
>>>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>>          Interrupt:40
>>
> ...
> Thank you for taking the time to write Stroller.  This has really got
> my head spinning.  First of all, you're right about the netmask.  It
> is 255.255.255.248.  I didn't have a good understanding of what a
> netmask is so I thought it would be smart to change it for a public
> message.
>
> The server is remote and hosted so I don't have any control over the
> router or network.  I've gone back and forth with the host but they
> insist that everything is fine on their end.
>
> I'm confused because I have in apache2 config:
>
> <VirtualHost 1.2.3.1:443>
> ...
> SSLCertificateFile /etc/apache2/ssl/www.example1.com.crt
> SSLCertificateKeyFile /etc/apache2/ssl/www.example1.com.key
> ...

Suggest you first establish you can ping *both* IPs.

Stroller.