[PATCH] test/passt/ndp: Add delay in SLAAC prefix test before looking for kernel_ra address

[Stefano Brivio <sbrivio@redhat.com>]

I'm not exactly sure why we need this delay, but commit 9a0e544f05bf
("test: Improve test for NDP assigned prefix") broke the tests for me.

I think it's because the kernel (at least all the versions I'm testing
with) might not mark an address as 'kernel_ra' right away, so the jq
expression doesn't return any result when we check.

Fixes: 9a0e544f05bf ("test: Improve test for NDP assigned prefix")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
---
 test/passt/ndp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/test/passt/ndp b/test/passt/ndp
index 56b385b..9a1c9a4 100644
--- a/test/passt/ndp
+++ b/test/passt/ndp
@@ -23,6 +23,7 @@ hout	HOST_IFNAME6 ip -j -6 route show|jq -rM '[.[] | select(.dst == "default").d
 check	[ -n "__IFNAME__" ]
 
 test	SLAAC: prefix
+sleep	2
 gout	ADDR6 ip -j -6 addr show|jq -rM '[.[] | select(.ifname == "__IFNAME__").addr_info[] | select(.scope == "global" and .protocol == "kernel_ra") | .local + "/" + (.prefixlen | tostring)] | .[0]'
 gout	PREFIX6 sipcalc __ADDR6__ | grep prefix | cut -d' ' -f4
 hout	HOST_ADDR6 ip -j -6 addr show|jq -rM '[.[] | select(.ifname == "__HOST_IFNAME6__").addr_info[] | select(.scope == "global" and .deprecated != true).local] | .[0]'
-- 
@@ -23,6 +23,7 @@ hout	HOST_IFNAME6 ip -j -6 route show|jq -rM '[.[] | select(.dst == "default").d
 check	[ -n "__IFNAME__" ]
 
 test	SLAAC: prefix
+sleep	2
 gout	ADDR6 ip -j -6 addr show|jq -rM '[.[] | select(.ifname == "__IFNAME__").addr_info[] | select(.scope == "global" and .protocol == "kernel_ra") | .local + "/" + (.prefixlen | tostring)] | .[0]'
 gout	PREFIX6 sipcalc __ADDR6__ | grep prefix | cut -d' ' -f4
 hout	HOST_ADDR6 ip -j -6 addr show|jq -rM '[.[] | select(.ifname == "__HOST_IFNAME6__").addr_info[] | select(.scope == "global" and .deprecated != true).local] | .[0]'
-- 
2.43.0