diff --git a/kickstart/files/kickstart.cfg b/kickstart/files/kickstart.cfg
index c19df1a1..1e4ce2a5 100644
--- a/kickstart/files/kickstart.cfg
+++ b/kickstart/files/kickstart.cfg
@@ -2623,7 +2623,22 @@ if [ -n "${BOOTIF}" ] ; then
             if [ -z "${mgmt_ip}" -o "${mgmt_ip}" == "None" -o -z "${mgmt_nm}" -o "${mgmt_nm}" = "None" ] ; then
                 report_failure_with_msg "Unable to parse management ip and netmask from sysinv queried mgmt_ip info : value:${host_info}. Aborting Installation."
             else
-                mgmt_gw=$(echo "${mgmt_ip}" | awk -F'.' -v OFS='.' '{$NF=1}1')
+                # the mgmt floating address is running on the active controller, so it is our gateway
+                mgmt_gw=$(echo "${host_info}" | grep -o '"floating": "[^"]*' | cut -d'"' -f4)
+                if [ -z "${mgmt_gw}" -o "${mgmt_gw}" == "None" ] ; then
+                    ilog "invalid mgmt_gw=${mgmt_gw}, extrapolate gateway from ${mgmt_ip}"
+                    # this step is done only to have a valid address value for mgmt_gw, to not create
+                    # parsing errors for ifupdown, no need to interrupt installation, as all traffic
+                    # post install will run locally on the management network until puppet executes
+                    # the manifest and with it the definitive network configuration is applied.
+                    if [[ ${mgmt_ip} =~ ^([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4}$ ]]; then
+                        # IPv6
+                        mgmt_gw=$(echo "${mgmt_ip}" | awk -F':' -v OFS=':' '{$NF=1}1')
+                    else
+                        # IPv4
+                        mgmt_gw=$(echo "${mgmt_ip}" | awk -F'.' -v OFS='.' '{$NF=1}1')
+                    fi
+                fi
                 ilog "... mgmt_gw=${mgmt_gw}"
             fi