diff --git a/SOURCES/dracut-module-setup.sh b/SOURCES/dracut-module-setup.sh
index 22740db..8c02006 100755
--- a/SOURCES/dracut-module-setup.sh
+++ b/SOURCES/dracut-module-setup.sh
@@ -233,7 +233,7 @@ cal_netmask_by_prefix() {
 #$2: srcaddr
 #if it use static ip echo it, or echo null
 kdump_static_ip() {
-    local _netdev="$1" _srcaddr="$2" _ipv6_flag
+    local _netdev="$1" _srcaddr="$2" kdumpnic="$3" _ipv6_flag
     local _netmask _gateway _ipaddr _target _nexthop _prefix
 
     _ipaddr=$(ip addr show dev $_netdev permanent | awk "/ $_srcaddr\/.* /{print \$2}")
@@ -270,7 +270,7 @@ kdump_static_ip() {
             _target="[$_target]"
             _nexthop="[$_nexthop]"
         fi
-        echo "rd.route=$_target:$_nexthop:$_netdev"
+        echo "rd.route=$_target:$_nexthop:$kdumpnic"
     done >> ${initdir}/etc/cmdline.d/45route-static.conf
 }
 
@@ -408,14 +408,16 @@ kdump_setup_znet() {
 # Setup dracut to bringup a given network interface
 kdump_setup_netdev() {
     local _netdev=$1 _srcaddr=$2
-    local _static _proto _ip_conf _ip_opts _ifname_opts
+    local _static _proto _ip_conf _ip_opts _ifname_opts kdumpnic
     local _netmac=$(kdump_get_mac_addr $_netdev)
 
+    kdumpnic=$(kdump_setup_ifname $_netdev)
+
     if [ "$(uname -m)" = "s390x" ]; then
         kdump_setup_znet $_netdev
     fi
 
-    _static=$(kdump_static_ip $_netdev $_srcaddr)
+    _static=$(kdump_static_ip $_netdev $_srcaddr $kdumpnic)
     if [ -n "$_static" ]; then
         _proto=none
     elif is_ipv6_address $_srcaddr; then
@@ -425,7 +427,7 @@ kdump_setup_netdev() {
     fi
 
     _ip_conf="${initdir}/etc/cmdline.d/40ip.conf"
-    _ip_opts=" ip=${_static}$(kdump_setup_ifname $_netdev):${_proto}"
+    _ip_opts=" ip=${_static}$kdumpnic:${_proto}"
 
     # dracut doesn't allow duplicated configuration for same NIC, even they're exactly the same.
     # so we have to avoid adding duplicates
@@ -445,7 +447,7 @@ kdump_setup_netdev() {
     elif kdump_is_vlan "$_netdev"; then
         kdump_setup_vlan "$_netdev"
     else
-        _ifname_opts=" ifname=$(kdump_setup_ifname $_netdev):$_netmac"
+        _ifname_opts=" ifname=$kdumpnic:$_netmac"
         echo "$_ifname_opts" >> $_ip_conf
     fi
 
diff --git a/SOURCES/kdump-lib.sh b/SOURCES/kdump-lib.sh
index 034638c..0279904 100755
--- a/SOURCES/kdump-lib.sh
+++ b/SOURCES/kdump-lib.sh
@@ -849,6 +849,11 @@ get_recommend_size()
     last_sz=""
     last_unit=""
 
+    start=${_ck_cmdline: :1}
+    if [ $mem_size -lt $start ]; then
+        echo "0M"
+        return
+    fi
     IFS=','
     for i in $_ck_cmdline; do
         end=$(echo $i | awk -F "-" '{ print $2 }' | awk -F ":" '{ print $1 }')
@@ -876,9 +881,9 @@ kdump_get_arch_recommend_size()
     fi
     arch=$(lscpu | grep Architecture | awk -F ":" '{ print $2 }' | tr [:lower:] [:upper:])
 
-    if [ $arch == "X86_64" ] || [ $arch == "S390" ]; then
+    if [ $arch == "X86_64" ] || [ $arch == "S390X" ]; then
         ck_cmdline="1G-4G:160M,4G-64G:192M,64G-1T:256M,1T-:512M"
-    elif [ $arch == "ARM64" ]; then
+    elif [ $arch == "AARCH64" ]; then
         ck_cmdline="2G-:448M"
     elif [ $arch == "PPC64LE" ]; then
         if is_fadump_capable; then
diff --git a/SPECS/kexec-tools.spec b/SPECS/kexec-tools.spec
index f0c50f1..d945299 100644
--- a/SPECS/kexec-tools.spec
+++ b/SPECS/kexec-tools.spec
@@ -1,6 +1,6 @@
 Name: kexec-tools
 Version: 2.0.20
-Release: 48%{?dist}
+Release: 50%{?dist}
 License: GPLv2
 Group: Applications/System
 Summary: The kexec/kdump userspace component
@@ -383,6 +383,13 @@ done
 %endif
 
 %changelog
+* Tue May 25 2021 Pingfan Liu <piliu@redhat.com> - 2.0.20-50
+- rd.route should use the name from kdump_setup_ifname
+- get kdump ifname once in kdump_install_netdev
+
+* Tue May 25 2021 Pingfan Liu <piliu@redhat.com> - 2.0.20-49
+- kdump-lib.sh: fix the case if no enough total RAM for kdump  in get_recommend_size()
+
 * Thu May 20 2021 Pingfan Liu <piliu@redhat.com> - 2.0.20-48
 - kdumpctl: Add kdumpctl estimate
 - mkdumprd: make use of the new get_luks_crypt_dev helper