Gentoo Archives: gentoo-user

From: Hans-Werner Hilse <hilse@×××.de>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Networking problems
Date: Mon, 06 Nov 2006 13:37:48
Message-Id: 20061106142944.bcb7c722.hilse@web.de
In Reply to: Re: [gentoo-user] Networking problems by Jeff Cranmer
1 Hi,
2
3 On Sat, 4 Nov 2006 07:24:51 -0500 (GMT-05:00) Jeff Cranmer
4 <jcranmer01@×××××××××.net> wrote:
5
6 > For the /etc/resolv.conf file, I have:
7 > search belkin
8 > nameserver 192.168.2.1
9 > nameserver 207.69.188.185
10 > nameserver 207.69.188.186
11 > nameserver 207.69.188.187
12
13 Given that the router runs a local DNS (caching) server, that should be
14 alright.
15
16 > route -n returns
17 > Kernel IP routing table
18 > Destination Gateway Genmask Flags
19 > Metric Ref Use Iface
20 > 192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
21 > 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
22 > 0.0.0.0 192.168.2.1 0.0.0.0 UG 0 0 0 eth0
23
24 looks good.
25
26 > Comparing this with the equivalent working connection via my Mandriva
27 > Linux boot-up, /etc/resolv.conf is the same, but route -n returns
28 > [...]
29 > The main difference is that the metric column is all 0 on my
30 > non-working install, and I'm missing the 169.254.0.0 row from route -n
31
32 That doesn't matter. That 169.254.0.0 subnet is the Windows
33 autoconfiguration range (when there's no DHCP server, but IP address
34 gathering is set to "automatic") and the metric doesn't matter because
35 you don't have concurrent routes.
36
37 > I'm not using genkernel. Is it possible that a kernel
38 > misconfiguration is responsible for the problems I'm having?
39
40 Unlikely, because in that case DHCP wouldn't work at all.
41
42 Maybe the Belkin is blocking your pings? Maybe the Belkin is
43 misconfigured and does not have Internet access? Maybe some firewall,
44 either on the Belkin or on your Gentoo machine (you can check by
45 issuing "iptables -vnL")?
46
47 You should also try to monitor traffic with tcpdump when issuing those
48 test pings. BTW, you cannot ping "http://www.google.de" since that
49 isn't a domain name but a URL. But you probably *did* ping the domain
50 name, didn't you?
51
52 -hwh
53 --
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