diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh
index 0cf35a8..1fa3011 100755
--- a/dracut-module-setup.sh
+++ b/dracut-module-setup.sh
@@ -108,6 +108,17 @@ source_ifcfg_file() {
     fi
 }
 
+add_dns_netdev() {
+    local _server _route
+
+    _server=$1
+    _route=`/sbin/ip -o route get to $_server 2>&1`
+    [ $? != 0 ] && echo "DNS server $_server unreachable"
+
+    _netdev=$(get_ip_route_field "$_route" "dev")
+    _save_kdump_netifs "$_netdev" "$(kdump_setup_ifname $_netdev)"
+}
+
 # $1: netdev name
 kdump_setup_dns() {
     local _nameserver _dns
@@ -115,8 +126,8 @@ kdump_setup_dns() {
 
     source_ifcfg_file $1
 
-    [ -n "$DNS1" ] && echo "nameserver=$DNS1" > "$_dnsfile"
-    [ -n "$DNS2" ] && echo "nameserver=$DNS2" >> "$_dnsfile"
+    [ -n "$DNS1" ] && echo "nameserver=$DNS1" > "$_dnsfile" && add_dns_netdev "$DNS1"
+    [ -n "$DNS2" ] && echo "nameserver=$DNS2" >> "$_dnsfile" && add_dns_netdev "$DNS2"
 
     while read content;
     do
@@ -128,6 +139,7 @@ kdump_setup_dns() {
 
         if [ ! -f $_dnsfile ] || [ ! $(cat $_dnsfile | grep -q $_dns) ]; then
             echo "nameserver=$_dns" >> "$_dnsfile"
+            add_dns_netdev "$_dns"
         fi
     done < "/etc/resolv.conf"
 }