This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1989187
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1989187
Title:
5.4: Setting net.ipv4.conf.<interface>.arp_notify=1 does not generate
gratuitous ARPs
Status in linux package in Ubuntu:
Incomplete
Bug description:
Expected behaviour:
The kernel should send out a gratuitous ARP on the interface when the
following commands are executed:
$ sudo sysctl -w net.ipv4.conf.eth0.arp_notify=1
net.ipv4.conf.eth0.arp_notify = 1
$ sudo ip link set dev eth0 down
$ sudo ip link set dev eth0 up
Result:
The gratuitous ARP packet is generated inside the kernel
(inetdev_send_gratuitous_arp() is called) but the packet is never sent
out on the interface. Generating gratuitous ARP packets with "arping"
works however.
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