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selftests/bpf: Omit nodad flag when adding addresses to loopback

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Setting IFA_F_NODAD flag for IPv6 addresses to add to loopback is
unnecessary. Duplicate Address Detection does not happen on loopback
device.

Also, passing 'nodad' flag to 'ip address' breaks libbpf CI, which runs in
an environment with BusyBox implementation of 'ip' command, that doesn't
understand this flag.

Fixes: 0ab5539f85 ("selftests/bpf: Tests for BPF_SK_LOOKUP attach point")
Reported-by: Andrii Nakryiko <andrii.nakryiko@gmail.com>
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Andrii Nakryiko <andrii@fb.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200730125325.1869363-1-jakub@cloudflare.com
This commit is contained in:
Jakub Sitnicki 2020-07-30 14:53:25 +02:00 committed by Daniel Borkmann
parent 80546ac458
commit a6599abdea
1 changed files with 2 additions and 2 deletions
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4
tools/testing/selftests/bpf/prog_tests/sk_lookup.c
View file

@ -1290,8 +1290,8 @@ static void run_tests(struct test_sk_lookup *skel)
static int switch_netns(void)
{
static const char * const setup_script[] = {
"ip -6 addr add dev lo " EXT_IP6 "/128 nodad",
"ip -6 addr add dev lo " INT_IP6 "/128 nodad",
"ip -6 addr add dev lo " EXT_IP6 "/128",
"ip -6 addr add dev lo " INT_IP6 "/128",
"ip link set dev lo up",
NULL,
};