Gentoo Archives: gentoo-user

From: Massimiliano Ziccardi <massimiliano.ziccardi@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Network problem with linux server
Date: Mon, 07 Nov 2011 14:13:32
Message-Id: CAET4pLt_2Zy_eK3N2hvRW_acMXLxHyUUtVUbp_xTG52mPW5jNQ@mail.gmail.com
In Reply to: Re: [gentoo-user] Network problem with linux server by Michael Schreckenbauer
1 Our network admin told me to create a lo:0 to that address to create a VIP
2 to be balanced by the network load balancer.
3
4 That is why lo:0 is there...
5
6 Thanks!
7
8 Regards,
9 Massimiliano Ziccardi
10
11 On Mon, Nov 7, 2011 at 15:01, Michael Schreckenbauer <grimlog@×××.de> wrote:
12
13 > Am Montag, 7. November 2011, 14:35:46 schrieb Massimiliano Ziccardi:
14 > > > seems to be a really tricky one...
15 > > > What does
16 > > > tracepath 195.75.145.33
17 > > > give?
18 > >
19 > > Here is the output:
20 > >
21 > > 1: 195.75.145.33 (195.75.145.33) 0.074ms pmtu
22 > > 16436
23 > > 1: 195.75.145.33 (195.75.145.33) 0.039ms
24 > reached
25 > > 1: 195.75.145.33 (195.75.145.33) 0.028ms
26 > reached
27 > >
28 > > I tried shutting down localhost with:
29 > >
30 > > ifconfig lo down.
31 > >
32 > > Now I can't ping 195.75.145.33 anymore (as all the other 195.75.145.xx
33 > > addresses).
34 > >
35 > > And now tracepath gives:
36 > >
37 > > 1: send failed
38 > > Resume: pmtu 65535
39 > >
40 > > So, for some reason, seems it always uses the 'lo' device...
41 > >
42 > > Any idea?
43 >
44 > I noticed lo:0 is on the same net and has the same netmask as eth0.
45 > Where does lo:0 come from? Is it needed?
46 > I have no idea, if this is the problem or even related, just wondering.
47 >
48 > > Regards,
49 > > Massimiliano
50 >
51 > Best,
52 > Michael
53 >
54 >
55 >