Gentoo Archives: gentoo-amd64

From: Peter Humphrey <prh@××××××××××.uk>
To: gentoo-amd64@l.g.o
Subject: [gentoo-amd64] Weird net routing
Date: Mon, 09 Jan 2006 12:59:00
Message-Id: 43C25DBD.1030804@gotadsl.co.uk
1 This may not be amd64-specific, in which case I apologise, but I'm having
2 problems commissioning a wireless network. I've connected a wireless access
3 point to a second NIC on this box and given them both new network addresses.
4 Both eth0 and eth1 are up and I can ping the WAP, but I cannot connect to
5 its Web server because all HTTP traffic goes down the wrong wire.
6
7 I have:
8
9 # cat /etc/conf.d/net
10 config_eth0=( "192.168.129.25 netmask 255.255.255.0 broadcast 192.168.129.255" )
11 config_eth1=( "192.168.133.1 netmask 255.255.255.0 broadcast 192.168.133.255" )
12 routes_eth0=( "default via 192.168.129.1" )
13
14 # route -n
15 Kernel IP routing table
16 Destination Gateway Genmask Flags Metric Ref Use Iface
17 192.168.129.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
18 192.168.133.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
19 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
20 0.0.0.0 192.168.129.1 0.0.0.0 UG 0 0 0 eth0
21
22 wstn ~ # grep 133 /etc/hosts
23 192.168.133.1 wstn.wlan wstn.home
24 192.168.133.33 spirit.wlan spirit
25 192.168.133.229 netgear.wlan netgear
26
27 (netgear is the WAP and spirit is a laptop the other side of it.)
28
29 # traceroute netgear
30 traceroute to netgear.wlan (192.168.133.229), 30 hops max, 46 byte packets
31 1 netgear.wlan (192.168.133.229) 0.548 ms 0.368 ms 0.366 ms
32
33 # links http://netgear
34 Times out and the WAP LEDs don't flicker. The same happens when I'm not
35 root, and when I specify '192.168.133.229' instead of 'netgear'. If I run
36 tcpdump on eth0 and eth1 I see the HTTP traffic going down the wrong interface.
37
38 I've tried unsetting http_proxy, even setting it to a bogus 192.168.133.229,
39 but that makes no difference. 'grep -r proxy /etc' reveals nothing once I've
40 taken http_proxy out of /etc/profile. 'env | grep proxy' also shows nothing.
41
42 Why is HTTP traffic going the wrong way? It's taking the default route
43 instead of the specific one it should know about. Bizarrely, Win XP on the
44 same box has no trouble so I know the hardware is fine.
45
46 --
47 Rgds
48 Peter.
49 --
50 gentoo-amd64@g.o mailing list

Replies

Subject Author
Re: [gentoo-amd64] Weird net routing Brett Johnson <brett@××××.com>
Re: [gentoo-amd64] Weird net routing Richard Fish <bigfish@××××××××××.org>