diff --git a/networkfs/resolvconf/resolvconf.go b/networkfs/resolvconf/resolvconf.go
index d88074f..61f92d9 100644
--- a/networkfs/resolvconf/resolvconf.go
+++ b/networkfs/resolvconf/resolvconf.go
@@ -23,11 +23,13 @@ var (
 	// For readability and sufficiency for Docker purposes this seemed more reasonable than a
 	// 1000+ character regexp with exact and complete IPv6 validation
 	ipv6Address = `([0-9A-Fa-f]{0,4}:){2,7}([0-9A-Fa-f]{0,4})`
+	ipLocalhost = `((127\.([0-9]{1,3}.){2}[0-9]{1,3})|(::1))`
 
-	localhostRegexp = regexp.MustCompile(`(?m)^nameserver\s+((127\.([0-9]{1,3}.){2}[0-9]{1,3})|(::1))\s*\n*`)
-	nsIPv6Regexp    = regexp.MustCompile(`(?m)^nameserver\s+` + ipv6Address + `\s*\n*`)
-	nsRegexp        = regexp.MustCompile(`^\s*nameserver\s*((` + ipv4Address + `)|(` + ipv6Address + `))\s*$`)
-	searchRegexp    = regexp.MustCompile(`^\s*search\s*(([^\s]+\s*)*)$`)
+	localhostIPRegexp = regexp.MustCompile(ipLocalhost)
+	localhostNSRegexp = regexp.MustCompile(`(?m)^nameserver\s+` + ipLocalhost + `\s*\n*`)
+	nsIPv6Regexp      = regexp.MustCompile(`(?m)^nameserver\s+` + ipv6Address + `\s*\n*`)
+	nsRegexp          = regexp.MustCompile(`^\s*nameserver\s*((` + ipv4Address + `)|(` + ipv6Address + `))\s*$`)
+	searchRegexp      = regexp.MustCompile(`^\s*search\s*(([^\s]+\s*)*)$`)
 )
 
 var lastModified struct {
@@ -87,7 +89,7 @@ func GetLastModified() ([]byte, string) {
 // It also returns a boolean to notify the caller if changes were made at all
 func FilterResolvDns(resolvConf []byte, ipv6Enabled bool) ([]byte, bool) {
 	changed := false
-	cleanedResolvConf := localhostRegexp.ReplaceAll(resolvConf, []byte{})
+	cleanedResolvConf := localhostNSRegexp.ReplaceAll(resolvConf, []byte{})
 	// if IPv6 is not enabled, also clean out any IPv6 address nameserver
 	if !ipv6Enabled {
 		cleanedResolvConf = nsIPv6Regexp.ReplaceAll(cleanedResolvConf, []byte{})
@@ -124,6 +126,13 @@ func getLines(input []byte, commentMarker []byte) [][]byte {
 	return output
 }
 
+// returns true if the IP string matches the localhost IP regular expression.
+// Used for determining if nameserver settings are being passed which are
+// localhost addresses
+func IsLocalhost(ip string) bool {
+	return localhostIPRegexp.MatchString(ip)
+}
+
 // GetNameservers returns nameservers (if any) listed in /etc/resolv.conf
 func GetNameservers(resolvConf []byte) []string {
 	nameservers := []string{}