diff --git a/src/common.c b/src/common.c
index 9e3cb25..9550393 100644
--- a/src/common.c
+++ b/src/common.c
@@ -221,30 +221,34 @@ int ceparseargs(const char *str){
 
 #endif
 
-void parsehost(int family, unsigned char *host, struct sockaddr *sa){
+int parsehost(int family, unsigned char *host, struct sockaddr *sa){
 	char *sp=NULL,*se=NULL;
-	unsigned short port;
+	unsigned short port=0;
+	int ret = 0;
 
+	if(!host) return 2;
 	if(*host == '[') se=strchr((char *)host, ']');
-	if ( (sp = strchr(se?se:(char *)host, ':')) ) *sp = 0;
+	if ( (sp = strchr(se?se:(char *)host, ':')) && !strchr(sp+1, ':')) *sp = 0;
 	if(se){
 		*se = 0;
 	}
 	if(sp){
 		port = atoi(sp+1);
 	}
-	getip46(family, host + (se!=0), (struct sockaddr *)sa);
+	ret = !getip46(family, host + (se!=0), (struct sockaddr *)sa);
 	if(se) *se = ']';
 	if(sp) *sp = ':';
-	*SAPORT(sa) = htons(port);
+	if(port)*SAPORT(sa) = htons(port);
+	return ret;
 }
 
 int parsehostname(char *hostname, struct clientparam *param, unsigned short port){
 	char *sp=NULL,*se=NULL;
+	int ret = 0;
 
-	if(!hostname || !*hostname)return 1;
+	if(!hostname || !*hostname)return 2;
 	if(*hostname == '[') se=strchr(hostname, ']');
-	if ( (sp = strchr(se?se:hostname, ':')) ) *sp = 0;
+	if ( (sp = strchr(se?se:hostname, ':'))  && !strchr(sp+1, ':')) *sp = 0;
 	if(se){
 		*se = 0;
 	}
@@ -255,12 +259,12 @@ int parsehostname(char *hostname, struct clientparam *param, unsigned short port
 	if(sp){
 		port = atoi(sp+1);
 	}
-	getip46(param->srv->family, param->hostname, (struct sockaddr *)&param->req);
+	ret = !getip46(param->srv->family, param->hostname, (struct sockaddr *)&param->req);
 	if(se) *se = ']';
 	if(sp) *sp = ':';
 	*SAPORT(&param->req) = htons(port);
 	memset(&param->sinsr, 0, sizeof(param->sinsr));
-	return 0;
+	return ret;
 }
 
 int parseusername(char *username, struct clientparam *param, int extpasswd){
diff --git a/src/conf.c b/src/conf.c
index 632acf8..735a222 100644
--- a/src/conf.c
+++ b/src/conf.c
@@ -563,8 +563,8 @@ static int h_nserver(int argc, unsigned char **argv){
 	if(numservers < MAXNSERVERS) {
 		if((str = strchr((char *)argv[1], '/')))
 			*str = 0;
-		if(!getip46(46, argv[1], (struct sockaddr *)&nservers[numservers].addr)) return 1;
 		*SAPORT(&nservers[numservers].addr) = htons(53);
+		if(parsehost(46, argv[1], (struct sockaddr *)&nservers[numservers].addr)) return 1;
 		if(str) {
 			nservers[numservers].usetcp = strstr(str + 1, "tcp")? 1:0;
 			*str = '/';
@@ -581,7 +581,7 @@ static int h_authnserver(int argc, unsigned char **argv){
 
 	if((str = strchr((char *)argv[1], '/')))
 		*str = 0;
-	if(!getip46(46, argv[1], (struct sockaddr *)&authnserver.addr)) return 1;
+	if(parsehost(46, argv[1], (struct sockaddr *)&authnserver.addr)) return 1;
 	*SAPORT(&authnserver.addr) = htons(53);
 	if(str) {
 		authnserver.usetcp = strstr(str + 1, "tcp")? 1:0;
diff --git a/src/proxy.h b/src/proxy.h
index 3c93658..061cfff 100644
--- a/src/proxy.h
+++ b/src/proxy.h
@@ -233,7 +233,7 @@ void mschap(const unsigned char *win_password,
 struct hashtable;
 void hashadd(struct hashtable *ht, const unsigned char* name, unsigned char* value, time_t expires);
 
-void parsehost(int family, unsigned char *host, struct sockaddr *sa);
+int parsehost(int family, unsigned char *host, struct sockaddr *sa);
 int parsehostname(char *hostname, struct clientparam *param, unsigned short port);
 int parseusername(char *username, struct clientparam *param, int extpasswd);
 int parseconnusername(char *username, struct clientparam *param, int extpasswd, unsigned short port);