Wired and wireless connection to the same router cause confusion
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
network-manager (Ubuntu) |
Fix Released
|
High
|
Unassigned |
Bug Description
Binary package hint: network-manager
I have a U.S.Robotics ADSL router here, with both wired and wireless connection to my laptop. They both work when booted with the cable plugged in, nm applet shows both, route -n shows:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 eth0
0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0
It seems that the wired connection is actually used to transmit packets. When I unplug the cable, the wireless connection is used.
When I plug the cable again, the network is put in a weird state: some connections succeed, some do not. A typical ping loses the first 5–7 packets but all the following ones return; sometimes the first packet returns and all the following ones do not, or none return. route -n is very similar, only the first two entries are swapped. DNS does not work; /etc/resolv.conf contains:
# Generated by NetworkManager
nameserver 192.168.1.1
nameserver 192.168.1.1
while normally the router IP is listed only once. The nm applet has the same display in either case, with both wired and wireless connection up.
Clicking on the wireless connection to reconnect it brings the state back to normal where everything works. Clicking on the wired connection does the opposite: it changes the state from working to the anomalous one. So it seems that the bad thing happens when the wired connection is getting enabled while the wireless connection was up.
This is network-manager 0.7~~svn2008092
Changed in network-manager: | |
assignee: | asac → nobody |
importance: | Undecided → High |
network-manager 0.7~~svn2008092 8t225540+ eni0-0ubuntu2~ nm3~hardy1 ? 8t183521+ eni0-0ubuntu4. ..
The Intrepid version of network-manager is 0.7~~svn2008090
Can you give us the result of 'aptitude show network-manager', please.