[Bridge] Ubuntu: network bridging between wireless and wired connection fails
richardvoigt at gmail.com
richardvoigt at gmail.com
Mon Apr 27 14:36:00 PDT 2009
Don't run dhcp on interfaces (eth1) that are joined to the bridge, only on
the bridge interface itself.
On Mon, Apr 27, 2009 at 4:13 PM, Jochen Hebbrecht <jochenhebbrecht at gmail.com
> wrote:
> Hi everybody,
>
> First of all, let me say that I searched a lot on the internet. I
> spent several hours sitting after my notebook, but I can't configure
> my network bridge in Ubuntu. I'm really desperate, so I hope somebody
> can point me out what I'm doing
>
> Hardware:
> -----------------------------------------------------------
> $ lspci | grep controller
> 06:05.0 Network controller: Intel Corporation PRO/Wireless 2200BG
> Network Connection (rev 05)
> 06:07.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8169
> Gigabit Ethernet (rev 10)
> -----------------------------------------------------------
>
> Kernel:
> -----------------------------------------------------------
> $ uname -a
> Linux Bacardi 2.6.24-23-generic #1 SMP Wed Apr 1 21:47:28 UTC 2009
> i686 GNU/Linux
> -----------------------------------------------------------
>
> I first tested the hardware in windows xp sp3. I selected the 2
> interfaces, right clicked on them and picked up: "Create network
> bridge". 30 seconds later, I was having a network bridge between my
> wired and wireless controller :-). Everything was working smoothly.
>
> Now, I want to do the same thing on my Ubuntu installation (same
> notebook, just dual booting to Ubuntu). I thought it would be easy,
> but apparantly, it isn't :-( ...
>
> This is my /etc/network/interfaces file:
>
> -----------------------------------------------------------
> $ cat /etc/network/interfaces
> auto lo
> iface lo inet loopback
>
> auto eth0
> iface eth0 inet manual
>
> auto eth1
> iface eth1 inet dhcp
> wpa-driver wext
> wpa-ssid ##SSID##
> wpa-ap-scan 1
> wpa-proto RSN
> wpa-pairwise CCMP
> wpa-group CCMP
> wpa-key-mgmt WPA-PSK
> wpa-psk ##PSK KEY##
>
> auto br0
> iface br0 inet dhcp
> bridge_ports eth0 eth1
> -----------------------------------------------------------
>
> So, eth1 is my wireless connection, eth0 is my wired connection.
> Without the bridge, I'm able to make a connection on my wireless side,
> as on my wired side.
>
> When I bring up the bridge, nothing works ... I'm not able to ping
> anything.
> This is my routing table:
>
> -----------------------------------------------------------
> $ route -n
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use
> Iface
> 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 br0
> 0.0.0.0 0.0.0.0 0.0.0.0 U 1000 0 0 b
> -----------------------------------------------------------
>
> And ifconfig -a information
> -----------------------------------------------------------
> $ ifconfig -a
> br0 Link encap:Ethernet HWaddr 00:0a:e4:ae:7e:4c
> inet6 addr: fe80::20a:e4ff:feae:7e4c/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:11 errors:0 dropped:0 overruns:0 frame:0
> TX packets:96 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:3927 (3.8 KB) TX bytes:6970 (6.8 KB)
>
> br0:avahi Link encap:Ethernet HWaddr 00:0a:e4:ae:7e:4c
> inet addr:169.254.7.81 Bcast:169.254.255.255 Mask:255.255.0.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>
> eth0 Link encap:Ethernet HWaddr 00:0a:e4:ae:7e:4c
> inet6 addr: fe80::20a:e4ff:feae:7e4c/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
> TX packets:107 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:0 (0.0 B) TX bytes:12221 (11.9 KB)
> Interrupt:20 Base address:0xc000
>
> eth1 Link encap:Ethernet HWaddr 00:15:00:1f:20:a6
> inet6 addr: fe80::215:ff:fe1f:20a6/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:80 errors:0 dropped:0 overruns:0 frame:0
> TX packets:111 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:844783 (824.9 KB) TX bytes:128864 (125.8 KB)
> Interrupt:21 Base address:0xc000 Memory:c8006000-c8006fff
>
> lo Link encap:Local Loopback
> inet addr:127.0.0.1 Mask:255.0.0.0
> inet6 addr: ::1/128 Scope:Host
> UP LOOPBACK RUNNING MTU:16436 Metric:1
> RX packets:1734 errors:0 dropped:0 overruns:0 frame:0
> TX packets:1734 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:88276 (86.2 KB) TX bytes:88276 (86.2 KB)
> -----------------------------------------------------------
>
> This is the output of syslog after restarting the networking daemon
>
> -----------------------------------------------------------
> Apr 27 23:01:32 Bacardi dhclient: There is already a pid file
> /var/run/dhclient.eth1.pid with pid 134519072
> Apr 27 23:01:32 Bacardi dhclient: Internet Systems Consortium DHCP Client
> V3.0.6
> Apr 27 23:01:32 Bacardi dhclient: Copyright 2004-2007 Internet Systems
> Consortium.
> Apr 27 23:01:32 Bacardi dhclient: All rights reserved.
> Apr 27 23:01:32 Bacardi dhclient: For info, please visit
> http://www.isc.org/sw/dhcp/
> Apr 27 23:01:32 Bacardi dhclient:
> Apr 27 23:01:32 Bacardi kernel: [ 158.946623]
> ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
> Apr 27 23:01:33 Bacardi dhclient: Listening on LPF/eth1/00:15:00:1f:20:a6
> Apr 27 23:01:33 Bacardi dhclient: Sending on LPF/eth1/00:15:00:1f:20:a6
> Apr 27 23:01:33 Bacardi dhclient: Sending on Socket/fallback
> Apr 27 23:01:36 Bacardi dhclient: DHCPDISCOVER on eth1 to
> 255.255.255.255 port 67 interval 8
> Apr 27 23:01:36 Bacardi dhclient: DHCPOFFER of 192.168.1.111 from
> 192.168.1.1
> Apr 27 23:01:36 Bacardi dhclient: DHCPREQUEST of 192.168.1.111 on eth1
> to 255.255.255.255 port 67
> Apr 27 23:01:37 Bacardi dhclient: DHCPACK of 192.168.1.111 from 192.168.1.1
> Apr 27 23:01:37 Bacardi dhclient: bound to 192.168.1.111 -- renewal in
> 42920 seconds.
> Apr 27 23:01:42 Bacardi kernel: [ 161.516967] eth1: no IPv6 routers
> present
> Apr 27 23:01:43 Bacardi kernel: [ 74.578698] Bridge firewalling
> registered
> Apr 27 23:01:43 Bacardi kernel: [ 74.578967] br0: Dropping
> NETIF_F_UFO since no NETIF_F_HW_CSUM feature.
> Apr 27 23:01:43 Bacardi kernel: [ 74.581732] device eth0 entered
> promiscuous mode
> Apr 27 23:01:43 Bacardi kernel: [ 74.581740]
> audit(1240866103.181:3): dev=eth0 prom=256 old_prom=0 auid=4294967295
> Apr 27 23:01:43 Bacardi kernel: [ 74.583808] device eth1 entered
> promiscuous mode
> Apr 27 23:01:43 Bacardi kernel: [ 74.583816]
> audit(1240866103.181:4): dev=eth1 prom=256 old_prom=0 auid=4294967295
> Apr 27 23:01:43 Bacardi kernel: [ 74.586637] br0: port 2(eth1)
> entering learning state
> Apr 27 23:01:43 Bacardi kernel: [ 74.586641] br0: port 1(eth0)
> entering learning state
> Apr 27 23:01:48 Bacardi ntpdate[7485]: can't find host ntp.univ-lyon1.fr
> Apr 27 23:01:48 Bacardi ntpdate[7485]: sendto(91.189.94.4): Network is
> unreachable
> Apr 27 23:01:51 Bacardi last message repeated 3 times
> Apr 27 23:01:52 Bacardi ntpdate[7485]: no server suitable for
> synchronization found
> Apr 27 23:01:53 Bacardi kernel: [ 162.782421] br0: no IPv6 routers present
> Apr 27 23:01:58 Bacardi kernel: [ 164.002241] br0: topology change
> detected, propagating
> Apr 27 23:01:58 Bacardi kernel: [ 164.002252] br0: port 2(eth1)
> entering forwarding state
> Apr 27 23:01:58 Bacardi kernel: [ 164.002257] br0: topology change
> detected, propagating
> Apr 27 23:01:58 Bacardi kernel: [ 164.002262] br0: port 1(eth0)
> entering forwarding state
> Apr 27 23:01:58 Bacardi dhclient: Internet Systems Consortium DHCP Client
> V3.0.6
> Apr 27 23:01:58 Bacardi dhclient: Copyright 2004-2007 Internet Systems
> Consortium.
> Apr 27 23:01:58 Bacardi dhclient: All rights reserved.
> Apr 27 23:01:58 Bacardi dhclient: For info, please visit
> http://www.isc.org/sw/dhcp/
> Apr 27 23:01:58 Bacardi dhclient:
> Apr 27 23:01:59 Bacardi dhclient: Listening on LPF/br0/00:0a:e4:ae:7e:4c
> Apr 27 23:01:59 Bacardi dhclient: Sending on LPF/br0/00:0a:e4:ae:7e:4c
> Apr 27 23:01:59 Bacardi dhclient: Sending on Socket/fallback
> Apr 27 23:02:02 Bacardi dhclient: DHCPDISCOVER on br0 to
> 255.255.255.255 port 67 interval 8
> Apr 27 23:02:10 Bacardi dhclient: DHCPDISCOVER on br0 to
> 255.255.255.255 port 67 interval 12
> Apr 27 23:02:22 Bacardi dhclient: DHCPDISCOVER on br0 to
> 255.255.255.255 port 67 interval 11
> Apr 27 23:02:33 Bacardi dhclient: No DHCPOFFERS received.
> Apr 27 23:02:33 Bacardi dhclient: No working leases in persistent
> database - sleeping.
> Apr 27 23:02:33 Bacardi avahi-autoipd(br0)[7686]: Found user
> 'avahi-autoipd' (UID 105) and group 'avahi-autoipd' (GID 113).
> Apr 27 23:02:33 Bacardi avahi-autoipd(br0)[7686]: Successfully called
> chroot().
> Apr 27 23:02:33 Bacardi avahi-autoipd(br0)[7686]: Successfully dropped
> root privileges.
> Apr 27 23:02:33 Bacardi avahi-autoipd(br0)[7686]: Starting with
> address 169.254.7.81
> Apr 27 23:02:38 Bacardi avahi-autoipd(br0)[7686]: Callout BIND,
> address 169.254.7.81 on interface br0
> Apr 27 23:02:42 Bacardi avahi-autoipd(br0)[7686]: Successfully claimed
> IP address 169.254.7.81
> -----------------------------------------------------------
>
>
> So I'm sure the wireless network card is able to bridge (as it works
> in Windows). I'm not sure if it works in Ubuntu. But what can the
> problem be? Is there something wrong in my configuration file? When do
> you choose dhcp/static/manual Which log files should I check, just to
> understand what's going wrong?
>
>
> Thanks for you time to read this mail. I really hope somebody can help
> me out here :-( ...
>
> Jochen
> _______________________________________________
> Bridge mailing list
> Bridge at lists.linux-foundation.org
> https://lists.linux-foundation.org/mailman/listinfo/bridge
>
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