diff --git a/ndhc/ifset.c b/ndhc/ifset.c
index f5af3af..4838205 100644
--- a/ndhc/ifset.c
+++ b/ndhc/ifset.c
@@ -385,12 +385,12 @@ static void ipbcpfx_clear_others_do(const struct nlmsghdr *nlh, void *data)
                 goto erase;
             if (!tb[IFA_ADDRESS])
                 goto erase;
-            if (memcmp(rtattr_get_data(tb[IFA_ADDRESS]), &ipx->ipaddr,
+            if (memcmp(RTA_DATA(tb[IFA_ADDRESS]), &ipx->ipaddr,
                        sizeof ipx->ipaddr))
                 goto erase;
             if (!tb[IFA_BROADCAST])
                 goto erase;
-            if (memcmp(rtattr_get_data(tb[IFA_BROADCAST]), &ipx->bcast,
+            if (memcmp(RTA_DATA(tb[IFA_BROADCAST]), &ipx->bcast,
                        sizeof ipx->bcast))
                 goto erase;
             break;
@@ -404,8 +404,8 @@ static void ipbcpfx_clear_others_do(const struct nlmsghdr *nlh, void *data)
   erase:
     r = rtnl_addr_broadcast_send(ipx->fd, RTM_DELADDR, ifm->ifa_flags,
                                  ifm->ifa_scope,
-                                 tb[IFA_ADDRESS] ? rtattr_get_data(tb[IFA_ADDRESS]) : NULL,
-                                 tb[IFA_BROADCAST] ? rtattr_get_data(tb[IFA_BROADCAST]) : NULL,
+                                 tb[IFA_ADDRESS] ? RTA_DATA(tb[IFA_ADDRESS]) : NULL,
+                                 tb[IFA_BROADCAST] ? RTA_DATA(tb[IFA_BROADCAST]) : NULL,
                                  ifm->ifa_prefixlen);
     if (r < 0 && r != -2) {
         log_warning("%s: (%s) Failed to delete IP and broadcast addresses.",
diff --git a/ndhc/netlink.c b/ndhc/netlink.c
index ca98b4f..ab81215 100644
--- a/ndhc/netlink.c
+++ b/ndhc/netlink.c
@@ -106,7 +106,7 @@ static int get_if_index_and_mac(const struct nlmsghdr *nlh,
     struct rtattr *tb[IFLA_MAX] = {0};
     nl_rtattr_parse(nlh, sizeof *ifm, rtattr_assign, tb);
     if (tb[IFLA_IFNAME] && !strncmp(client_config.interface,
-                                    rtattr_get_data(tb[IFLA_IFNAME]),
+                                    RTA_DATA(tb[IFLA_IFNAME]),
                                     sizeof client_config.interface)) {
         client_config.ifindex = ifm->ifi_index;
         if (!tb[IFLA_ADDRESS])
@@ -116,8 +116,7 @@ static int get_if_index_and_mac(const struct nlmsghdr *nlh,
             suicide("FATAL: Adapter hardware address length should be 6, but is %u.",
                     maclen);
 
-        const unsigned char *mac =
-            (unsigned char *)rtattr_get_data(tb[IFLA_ADDRESS]);
+        const unsigned char *mac = RTA_DATA(tb[IFLA_ADDRESS]);
         log_line("%s hardware address %x:%x:%x:%x:%x:%x",
                  client_config.interface,
                  mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
diff --git a/ndhc/nl.h b/ndhc/nl.h
index fe1aa74..cf03ea7 100644
--- a/ndhc/nl.h
+++ b/ndhc/nl.h
@@ -33,11 +33,6 @@
 #include <linux/netlink.h>
 #include <linux/rtnetlink.h>
 
-static inline void *rtattr_get_data(const struct rtattr *attr)
-{
-    return (char *)RTA_DATA(attr);
-}
-
 static inline int nlmsg_get_error(const struct nlmsghdr *nlh)
 {
     const struct nlmsgerr *err = NLMSG_DATA(nlh);