tests: add routing tests for switching between same prefixes

Differential Revision: https://reviews.freebsd.org/D36055
MFC after:	2 weeks

2 files changed, 20 insertions, 3 deletions

diff --git a/tests/atf_python/sys/net/tools.py b/tests/atf_python/sys/net/tools.py
index c67941b414fc..23bb5f4b4128 100644
--- a/tests/atf_python/sys/net/tools.py
+++ b/tests/atf_python/sys/net/tools.py
@@ -41,7 +41,7 @@ class ToolsHelper(object):
     def get_routes(cls, family: str, fibnum: int = 0):
         family_key = {"inet": "-4", "inet6": "-6"}.get(family)
         out = cls.get_output(
-            "{} {} -rn -F {} --libxo json".format(cls.NETSTAT_PATH, family_key, fibnum)
+            "{} {} -rnW -F {} --libxo json".format(cls.NETSTAT_PATH, family_key, fibnum)
         )
         js = json.loads(out)
         js = js["statistics"]["route-information"]["route-table"]["rt-family"]
@@ -51,6 +51,19 @@ class ToolsHelper(object):
             return []
 
     @classmethod
+    def get_nhops(cls, family: str, fibnum: int = 0):
+        family_key = {"inet": "-4", "inet6": "-6"}.get(family)
+        out = cls.get_output(
+            "{} {} -onW -F {} --libxo json".format(cls.NETSTAT_PATH, family_key, fibnum)
+        )
+        js = json.loads(out)
+        js = js["statistics"]["route-nhop-information"]["nhop-table"]["rt-family"]
+        if js:
+            return js[0]["nh-entry"]
+        else:
+            return []
+
+    @classmethod
     def get_linklocals(cls):
         ret = {}
         ifname = None
diff --git a/tests/atf_python/sys/net/vnet.py b/tests/atf_python/sys/net/vnet.py
index 663f7695a0cc..0d9f969b28d9 100644
--- a/tests/atf_python/sys/net/vnet.py
+++ b/tests/atf_python/sys/net/vnet.py
@@ -101,11 +101,15 @@ class VnetInterface(object):
         addr = ipaddress.ip_interface(_addr)
         if addr.version == 6:
             family = "inet6"
+            cmd = "/sbin/ifconfig {} {} {}".format(self.name, family, addr)
         else:
             family = "inet"
-        cmd = "/sbin/ifconfig {} {} {}".format(self.name, family, addr)
+            if self.addr_map[family]:
+                cmd = "/sbin/ifconfig {} alias {}".format(self.name, addr)
+            else:
+                cmd = "/sbin/ifconfig {} {} {}".format(self.name, family, addr)
         self.run_cmd(cmd)
-        self.addr_map[family][str(addr)] = addr
+        self.addr_map[family][str(addr.ip)] = addr
 
     def delete_addr(self, _addr: str):
         addr = ipaddress.ip_address(_addr)