Re: [PATCH net-next, v2] selftest: add selftest for anycast notifications

On Thu, Jun 19, 2025 at 12:51:16PM +0900, Yuyang Huang wrote:

This commit adds a new kernel selftest to verify RTNLGRP_IPV6_ACADDR notifications. The test works by adding/removing a dummy interface, enabling packet forwarding, and then confirming that user space can correctly receive anycast notifications.

The test relies on the iproute2 version to be 6.13+.

Tested by the following command: $ vng -v --user root --cpus 16 -- \ make -C tools/testing/selftests TARGETS=net TEST_PROGS=rtnetlink_notification.sh \ TEST_GEN_PROGS="" run_tests

Cc: Maciej Żenczykowski maze@google.com Cc: Lorenzo Colitti lorenzo@google.com Signed-off-by: Yuyang Huang yuyanghuang@google.com

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Changelog since v1:

• Remote unrelated clean up code.

Thanks for the update.

Reviewed-by: Simon Horman horms@kernel.org