localhop-scenario-test: Add test case for localhop scenario

Refs: #1386

Change-Id: I3fdf47350abfeca9a39bb35abb78587f8d2fc902
diff --git a/multi-host.conf b/multi-host.conf
index 66c9ed1..469be7d 100644
--- a/multi-host.conf
+++ b/multi-host.conf
@@ -39,8 +39,8 @@
 IP4_C1=10.0.0.3
 IP4_A2=10.0.0.9
 IP4_R1=10.0.0.10
-IP4_R2=10.0.0.17
-IP4_D1=10.0.0.18
+IP4_R2=10.0.0.25
+IP4_D1=10.0.0.26
 IP6_A1=fd8c:edca:0f3c:10f4::2
 IP6_B1=fd8c:edca:0f3c:10f4::1
 IP6_C1=fd8c:edca:0f3c:10f4::3