I suspect this here, too. A PC here has a RTL8136 gigabit ethernet on the motherboard, which is connected with a lan cable to a gigabit port on a netgear router. ubuntu 11.10 was installed yesterday.
The gigabit RTL driver kernel module was installed and the RTL8139 module blacklisted. It drops ping and dns udp packets intermittently. Observations: 1. problem presents as dns outage... ping and udp dns are both affected 2. on resetting network, tcp dns to a supporting host is not affected 3. large tcp transfers, like scp of 1GB, complete at reasonable speed (60 Mb/s on a 50Mb service level home fiber installation) 4. Once it drops, it may come back 30 sec or more later, or not at all. 5. restarting the network connection often only makes it function for 5 sec or so 6. wireshark shows arp traffic evert few seconds (shouldn't the arp timeout be bigger?) -- also google chrome waits and generates tons of udp dns requests before finally either getting a good reply and proceeding quickly (tcp) or timing out Over this weekend, I am willing to try some more testing if anyone wants to pursue this furher. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/786523 Title: Inbound UDP packet drops every 5 seconds in Natty 11.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/786523/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
