Gentoo Archives: gentoo-user

From: Grant <emailgrant@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] IP aliasing problem
Date: Thu, 07 Oct 2010 16:33:57
Message-Id: AANLkTingSzBTDKbFr29YoQ1nmLwhwe6aB7L3Noz+PPJC@mail.gmail.com
In Reply to: Re: [gentoo-user] IP aliasing problem by Stroller
1 >>>> ...I have 5 usable IPs from my host and I've defined 2 of them in /etc/conf.d/net like this:
2 >>>>
3 >>>> config_eth0=(
4 >>>>        "1.2.3.1 netmask 255.255.255.0"
5 >>>>        "1.2.3.2 netmask 255.255.255.0"
6 >>>> )
7 >>>>
8 >>>> My apache2 config is not working as expected and I think its due to a
9 >>>> networking problem because eth0:1 reports no RX or TX stats:
10 >>>>
11 >>>> # ifconfig
12 >>>> eth0      Link encap:Ethernet  HWaddr [removed]
13 >>>>          inet addr:1.2.3.1  Bcast:[removed]  Mask:255.255.255.0
14 >>>>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
15 >>>>          RX packets:46047 errors:0 dropped:0 overruns:0 frame:0
16 >>>>          TX packets:65703 errors:0 dropped:0 overruns:0 carrier:0
17 >>>>          collisions:0 txqueuelen:1000
18 >>>>          RX bytes:6131194 (5.8 MiB)  TX bytes:82568335 (78.7 MiB)
19 >>>>          Interrupt:40
20 >>>>
21 >>>> eth0:1    Link encap:Ethernet  HWaddr [removed]
22 >>>>          inet addr:1.2.3.2  Bcast:[removed]  Mask:255.255.255.0
23 >>>>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
24 >>>>          Interrupt:40
25 >>>
26 >> ...
27 >> Thank you for taking the time to write Stroller.  This has really got
28 >> my head spinning.  First of all, you're right about the netmask.  It
29 >> is 255.255.255.248.  I didn't have a good understanding of what a
30 >> netmask is so I thought it would be smart to change it for a public
31 >> message.
32 >>
33 >> The server is remote and hosted so I don't have any control over the
34 >> router or network.  I've gone back and forth with the host but they
35 >> insist that everything is fine on their end.
36 >>
37 >> I'm confused because I have in apache2 config:
38 >>
39 >> <VirtualHost 1.2.3.1:443>
40 >> ...
41 >> SSLCertificateFile /etc/apache2/ssl/www.example1.com.crt
42 >> SSLCertificateKeyFile /etc/apache2/ssl/www.example1.com.key
43 >> ...
44 >
45 > Suggest you first establish you can ping *both* IPs.
46
47 Thanks Stroller. It's working now. I needed to define apache2's
48 ServerName differently for each VirtualHost. Strangely though, I
49 still don't get stats for RX/TX from ifconfig:
50
51 eth0 Link encap:Ethernet HWaddr [removed]
52 inet addr:1.2.3.1 Bcast:[removed] Mask:255.255.255.248
53 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
54 RX packets:923677 errors:0 dropped:0 overruns:0 frame:0
55 TX packets:1444212 errors:0 dropped:0 overruns:0 carrier:0
56 collisions:0 txqueuelen:1000
57 RX bytes:124904402 (119.1 MiB) TX bytes:1880087116 (1.7 GiB)
58 Interrupt:40
59
60 eth0:1 Link encap:Ethernet HWaddr [removed]
61 inet addr:1.2.3.2 Bcast:[removed] Mask:255.255.255.248
62 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
63 Interrupt:40
64
65 - Grant

Replies

Subject Author
Re: [gentoo-user] IP aliasing problem BRM <bm_witness@×××××.com>