Public bug reported:
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.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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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:
New
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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https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1989187/+subscriptions
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