diff --git a/netutils/netlib/netlib_autoconfig.c b/netutils/netlib/netlib_autoconfig.c
index d094a8237..56f169de7 100644
--- a/netutils/netlib/netlib_autoconfig.c
+++ b/netutils/netlib/netlib_autoconfig.c
@@ -71,7 +71,7 @@ int netlib_icmpv6_autoconfiguration(FAR const char *ifname)
           /* Create a request consisting only of the interface name */
 
           struct lifreq req;
-          strncpy(req.lifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.lifr_name, ifname, IFNAMSIZ);
 
           /* Perform the ICMPv6 auto-configuration and close the socket */
 
diff --git a/netutils/netlib/netlib_getdripv4addr.c b/netutils/netlib/netlib_getdripv4addr.c
index efafd6c8b..32398baa9 100644
--- a/netutils/netlib/netlib_getdripv4addr.c
+++ b/netutils/netlib/netlib_getdripv4addr.c
@@ -70,7 +70,7 @@ int netlib_get_dripv4addr(FAR const char *ifname, FAR struct in_addr *addr)
       if (sockfd >= 0)
         {
           struct ifreq req;
-          strncpy(req.ifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.ifr_name, ifname, IFNAMSIZ);
           ret = ioctl(sockfd, SIOCGIFDSTADDR, (unsigned long)&req);
           if (!ret)
             {
diff --git a/netutils/netlib/netlib_getessid.c b/netutils/netlib/netlib_getessid.c
index baa59d39d..6204c1745 100644
--- a/netutils/netlib/netlib_getessid.c
+++ b/netutils/netlib/netlib_getessid.c
@@ -77,7 +77,7 @@ int netlib_getessid(FAR const char *ifname, FAR char *essid, size_t idlen)
           /* Put the driver name into the request */
 
           memset(&req, 0, sizeof(struct iwreq));
-          strncpy(req.ifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.ifr_name, ifname, IFNAMSIZ);
 
           /* Put pointer to receive the ESSID into the request */
 
diff --git a/netutils/netlib/netlib_getifstatus.c b/netutils/netlib/netlib_getifstatus.c
index e4688af35..0105a1621 100644
--- a/netutils/netlib/netlib_getifstatus.c
+++ b/netutils/netlib/netlib_getifstatus.c
@@ -73,7 +73,7 @@ int netlib_getifstatus(FAR const char *ifname, FAR uint8_t *flags)
 
           /* Put the driver name into the request */
 
-          strncpy(req.ifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.ifr_name, ifname, IFNAMSIZ);
 
           /* Perform the ioctl to ifup or ifdown status */
 
diff --git a/netutils/netlib/netlib_getipv4addr.c b/netutils/netlib/netlib_getipv4addr.c
index 3253808b2..56a61853a 100644
--- a/netutils/netlib/netlib_getipv4addr.c
+++ b/netutils/netlib/netlib_getipv4addr.c
@@ -70,7 +70,7 @@ int netlib_get_ipv4addr(FAR const char *ifname, FAR struct in_addr *addr)
       if (sockfd >= 0)
         {
           struct ifreq req;
-          strncpy(req.ifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.ifr_name, ifname, IFNAMSIZ);
           ret = ioctl(sockfd, SIOCGIFADDR, (unsigned long)&req);
           if (!ret)
             {
diff --git a/netutils/netlib/netlib_getipv4netmask.c b/netutils/netlib/netlib_getipv4netmask.c
index 3c8e66e25..a341774b1 100644
--- a/netutils/netlib/netlib_getipv4netmask.c
+++ b/netutils/netlib/netlib_getipv4netmask.c
@@ -70,7 +70,7 @@ int netlib_get_ipv4netmask(FAR const char *ifname, FAR struct in_addr *addr)
       if (sockfd >= 0)
         {
           struct ifreq req;
-          strncpy(req.ifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.ifr_name, ifname, IFNAMSIZ);
           ret = ioctl(sockfd, SIOCGIFNETMASK, (unsigned long)&req);
           if (!ret)
             {
diff --git a/netutils/netlib/netlib_getipv6addr.c b/netutils/netlib/netlib_getipv6addr.c
index 8c38e99ca..1260e1f09 100644
--- a/netutils/netlib/netlib_getipv6addr.c
+++ b/netutils/netlib/netlib_getipv6addr.c
@@ -71,7 +71,7 @@ int netlib_get_ipv6addr(FAR const char *ifname, FAR struct in6_addr *addr)
         {
           struct lifreq req;
 
-          strncpy(req.lifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.lifr_name, ifname, IFNAMSIZ);
           ret = ioctl(sockfd, SIOCGLIFADDR, (unsigned long)&req);
           if (!ret)
             {
diff --git a/netutils/netlib/netlib_getmacaddr.c b/netutils/netlib/netlib_getmacaddr.c
index 387aa7c85..46b799be3 100644
--- a/netutils/netlib/netlib_getmacaddr.c
+++ b/netutils/netlib/netlib_getmacaddr.c
@@ -72,7 +72,7 @@ int netlib_getmacaddr(const char *ifname, uint8_t *macaddr)
 
           /* Put the driver name into the request */
 
-          strncpy(req.ifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.ifr_name, ifname, IFNAMSIZ);
 
           /* Perform the ioctl to get the MAC address */
 
diff --git a/netutils/netlib/netlib_setdripv4addr.c b/netutils/netlib/netlib_setdripv4addr.c
index c1e37d5f1..f04dba417 100644
--- a/netutils/netlib/netlib_setdripv4addr.c
+++ b/netutils/netlib/netlib_setdripv4addr.c
@@ -90,7 +90,7 @@ int netlib_set_dripv4addr(FAR const char *ifname,
 
           /* Add the device name to the request */
 
-          strncpy(req.ifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.ifr_name, ifname, IFNAMSIZ);
 
           /* Add the INET address to the request */
 
diff --git a/netutils/netlib/netlib_setdripv6addr.c b/netutils/netlib/netlib_setdripv6addr.c
index 947b1ff04..4da663e6c 100644
--- a/netutils/netlib/netlib_setdripv6addr.c
+++ b/netutils/netlib/netlib_setdripv6addr.c
@@ -71,7 +71,7 @@ int netlib_set_dripv6addr(FAR const char *ifname,
 
           /* Add the device name to the request */
 
-          strncpy(req.lifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.lifr_name, ifname, IFNAMSIZ);
 
           /* Add the INET address to the request */
 
diff --git a/netutils/netlib/netlib_setessid.c b/netutils/netlib/netlib_setessid.c
index 8f49d375c..ab91d09bf 100644
--- a/netutils/netlib/netlib_setessid.c
+++ b/netutils/netlib/netlib_setessid.c
@@ -75,7 +75,7 @@ int netlib_setessid(FAR const char *ifname, FAR const char *essid)
 
           /* Put the driver name into the request */
 
-          strncpy(req.ifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.ifr_name, ifname, IFNAMSIZ);
 
           /* Put the new ESSID into the request */
 
diff --git a/netutils/netlib/netlib_setifstatus.c b/netutils/netlib/netlib_setifstatus.c
index 57e49f60c..8ed30fa9f 100644
--- a/netutils/netlib/netlib_setifstatus.c
+++ b/netutils/netlib/netlib_setifstatus.c
@@ -71,7 +71,7 @@ int netlib_ifup(const char *ifname)
 
           /* Put the driver name into the request */
 
-          strncpy(req.ifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.ifr_name, ifname, IFNAMSIZ);
 
           /* Perform the ioctl to ifup flag */
 
@@ -114,7 +114,7 @@ int netlib_ifdown(const char *ifname)
 
           /* Put the driver name into the request */
 
-          strncpy(req.ifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.ifr_name, ifname, IFNAMSIZ);
 
           /* Perform the ioctl to ifup flag */
 
diff --git a/netutils/netlib/netlib_setipv4addr.c b/netutils/netlib/netlib_setipv4addr.c
index d2b2db6d2..dca8f09fb 100644
--- a/netutils/netlib/netlib_setipv4addr.c
+++ b/netutils/netlib/netlib_setipv4addr.c
@@ -71,7 +71,7 @@ int netlib_set_ipv4addr(FAR const char *ifname,
 
           /* Add the device name to the request */
 
-          strncpy(req.ifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.ifr_name, ifname, IFNAMSIZ);
 
           /* Add the INET address to the request */
 
diff --git a/netutils/netlib/netlib_setipv4netmask.c b/netutils/netlib/netlib_setipv4netmask.c
index dca7c3bee..c34b017f6 100644
--- a/netutils/netlib/netlib_setipv4netmask.c
+++ b/netutils/netlib/netlib_setipv4netmask.c
@@ -70,7 +70,7 @@ int netlib_set_ipv4netmask(FAR const char *ifname,
 
           /* Add the device name to the request */
 
-          strncpy(req.ifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.ifr_name, ifname, IFNAMSIZ);
 
           /* Add the INET address to the request */
 
diff --git a/netutils/netlib/netlib_setipv6addr.c b/netutils/netlib/netlib_setipv6addr.c
index 956303ddf..79cad9bd0 100644
--- a/netutils/netlib/netlib_setipv6addr.c
+++ b/netutils/netlib/netlib_setipv6addr.c
@@ -71,7 +71,7 @@ int netlib_set_ipv6addr(FAR const char *ifname,
 
           /* Add the device name to the request */
 
-          strncpy(req.lifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.lifr_name, ifname, IFNAMSIZ);
 
           /* Add the INET address to the request */
 
diff --git a/netutils/netlib/netlib_setipv6netmask.c b/netutils/netlib/netlib_setipv6netmask.c
index ab6041270..985d55ed7 100644
--- a/netutils/netlib/netlib_setipv6netmask.c
+++ b/netutils/netlib/netlib_setipv6netmask.c
@@ -70,7 +70,7 @@ int netlib_set_ipv6netmask(FAR const char *ifname,
 
           /* Add the device name to the request */
 
-          strncpy(req.lifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.lifr_name, ifname, IFNAMSIZ);
 
           /* Add the INET address to the request */
 
diff --git a/netutils/netlib/netlib_setmacaddr.c b/netutils/netlib/netlib_setmacaddr.c
index 55aed879b..07c3263ce 100644
--- a/netutils/netlib/netlib_setmacaddr.c
+++ b/netutils/netlib/netlib_setmacaddr.c
@@ -72,7 +72,7 @@ int netlib_setmacaddr(const char *ifname, const uint8_t *macaddr)
 
           /* Put the driver name into the request */
 
-          strncpy(req.ifr_name, ifname, IFNAMSIZ);
+          strlcpy(req.ifr_name, ifname, IFNAMSIZ);
 
           /* Put the new MAC address into the request */