Re: [gentoo-user] IP aliasing problem

[Grant <emailgrant@gmail.com>]

>>>> ...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.

Thanks Stroller.  It's working now.  I needed to define apache2's
ServerName differently for each VirtualHost.  Strangely though, I
still don't get stats for RX/TX from ifconfig:

eth0      Link encap:Ethernet  HWaddr [removed]
          inet addr:1.2.3.1  Bcast:[removed]  Mask:255.255.255.248
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:923677 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1444212 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:124904402 (119.1 MiB)  TX bytes:1880087116 (1.7 GiB)
          Interrupt:40

eth0:1    Link encap:Ethernet  HWaddr [removed]
          inet addr:1.2.3.2  Bcast:[removed]  Mask:255.255.255.248
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:40

- Grant