selftest: tun: Add test data for success and failure paths

To improve the robustness and coverage of the TUN selftests, this
patch expands the set of test data.

Signed-off-by: Xu Du <xudu@redhat.com>
Link: https://patch.msgid.link/5054f3ad9f3dbfe33b827183fccc5efeb8fd0da7.1768979440.git.xudu@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Xu Du 2026-01-21 18:05:01 +08:00 • committed by Jakub Kicinski
commit 87db2fdef5