Commit 5f7ca2e7f4 for frr

commit 5f7ca2e7f49d0936033095f6f7783dcb4b855aa0
Author: Donald Sharp <sharpd@nvidia.com>
Date:   Tue Sep 29 14:10:52 2026 -0400

    tests: Ensure nexthop is available for sharpd

    The test is doing this:

    a) start router
    b) install sharp routes
    c) Does stuff with sharp routes

    b) is failing in some rare cases under heavy system load when
    the nexthop used in the sharp route installation has not
    fully come up under heavy system load.  Ensure that the
    connected route is there, such that the sharp route installation
    should succeed.

    Signed-off-by: Donald Sharp <sharpd@nvidia.com>

diff --git a/tests/topotests/bgp_bmp_slow/test_bgp_bmp_slow.py b/tests/topotests/bgp_bmp_slow/test_bgp_bmp_slow.py
index caf56a8aeb..9efb9e3ad5 100644
--- a/tests/topotests/bgp_bmp_slow/test_bgp_bmp_slow.py
+++ b/tests/topotests/bgp_bmp_slow/test_bgp_bmp_slow.py
@@ -128,6 +128,23 @@ def setup_module(mod):
         logger.info("r2 sharp routes installed (%s): %d" % (cmd, n))
         return n >= NROUTES

+    # The IPv4 sharp nexthop is r2's own loopback. If the routes are injected
+    # before zebra has that prefix as a connected route, resolution fails once
+    # and the routes stay inactive. Wait until it is connected.
+    def _loopback_connected():
+        out = tgen.gears["r2"].vtysh_cmd("show ip route 172.16.255.2 json", isjson=True)
+        connected = any(
+            entry.get("protocol") == "connected"
+            for entries in out.values()
+            if isinstance(entries, list)
+            for entry in entries
+        )
+        logger.info("r2 172.16.255.2 connected: %s" % connected)
+        return connected
+
+    _, ok = topotest.run_and_expect(_loopback_connected, True, count=15, wait=1)
+    assert ok, "r2 loopback 172.16.255.2 is not a connected route"
+
     # sharpd uses a single global install continuation (struct buffer_delay);
     # firing the second large `sharp install routes` before the first has drained
     # clobbers it and silently drops routes from the in-flight family. Wait for