SEBA-686 Enable multiple Ponsim OLTs

Change-Id: I0128903474f31b6e00d0fc1eed5cfad604d87475
diff --git a/src/test/cord-api/Framework/DHCP.robot b/src/test/cord-api/Framework/DHCP.robot
index 8f1a08d..c8b40d2 100644
--- a/src/test/cord-api/Framework/DHCP.robot
+++ b/src/test/cord-api/Framework/DHCP.robot
@@ -35,6 +35,6 @@
     [Arguments]    ${ip_should_exist}    ${iface}    ${ip}    ${user}    ${pass}=${None}    ${container_type}=${None}    ${container_name}=${None}
     [Documentation]    Check if the sepcified interface has an IPv4 address assigned
     ${output}=    Login And Run Command On Remote System    ip address show ${iface}    ${ip}    ${user}    ${pass}    ${container_type}    ${container_name}
-    ${ipv4_regex}=    Set Variable If    '${container_type}' != 'K8S'    \\b([0-9]{1,3}\\.){3}[0-9]{1,3}\\b    \\b(172)\.(18)(\.([0-9])){1,3}\\b
+    ${ipv4_regex}=    Set Variable If    '${container_type}' != 'K8S'    \\b([0-9]{1,3}\\.){3}[0-9]{1,3}\\b    \\b(172)\\.(18)(\\.([0-9]{1,3})){2}\\b
     Run Keyword If    '${ip_should_exist}' == 'True'    Should Match Regexp    ${output}    ${ipv4_regex}
     Run Keyword If    '${ip_should_exist}' == 'False'    Should Not Match Regexp    ${output}    ${ipv4_regex}
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