** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1331150
Title:
arp fails to update, 3.13.0-{24,29}
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
in an AWS environment managed by BOSH, we saw tcp connectivity
problems between pairs of VMs.
VM A and VM B are up, running ubuntu 14.04-based images, and in the
same vpc subnet.
VM B is terminated, and another VM is created that uses the IP address
from VM B
The new VM tries to make a tcp connection to VM A. In some cases, the
connection fails.
Investigation reveals that VM A has the old MAC address in its
neighbor list. In some cases, running arp -d <IP Address> on VM A
"fixes the problem". Also in some cases, running arping in gratuitous
arp mode on the new VM also fixes the problem.
The problem does not occur if VM A is running an ubuntu 10.04-based
image.
The problem seems to occur only on machines with lots of tcp
connection traffic between them.
'arp -d' and arping on the new VM do not seem to "fix" the problem if
there are processes on the VMs that are trying to create new TCP
connections.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1331150/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
