Commit aadff9f7 authored by Jakub Kicinski's avatar Jakub Kicinski
Browse files

selftests: net: add a hint about MACAddressPolicy=persistent 

New NIPA installation had been reporting a few flaky tests.
arp_ndisc_evict_nocarrier is most flaky of them all.
I suspect that the flakiness is due to udev swapping the MAC
addresses on the interfaces. Extend the message in
arp_ndisc_evict_nocarrier to hint at this potential issue.
Having the neigh get fail right after ping is rather unusual,
unless udev changes the MAC addr causing a flush in the meantime.

Link: https://patch.msgid.link/20251127194556.2409574-1-kuba@kernel.org


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 4b1639ca

tools/testing/selftests/net/arp_ndisc_evict_nocarrier.sh

+1 −1
Original line number Diff line number Diff line
@@ -75,7 +75,7 @@ setup_v4() { 
    ip neigh get $V4_ADDR1 dev veth0 >/dev/null 2>&1

    if [ $? -ne 0 ]; then

        cleanup_v4

        echo "failed"

        echo "failed; is the system using MACAddressPolicy=persistent ?"

        exit 1

    fi