diff --git a/sysdep/linux/sysio.h b/sysdep/linux/sysio.h
index e21ff48..0c83965 100644
--- a/sysdep/linux/sysio.h
+++ b/sysdep/linux/sysio.h
@@ -30,7 +30,19 @@ struct tcp_md5sig_ext {
 
 
 /* Linux does not care if sa_len is larger than needed */
-#define SA_LEN(x) sizeof(sockaddr)
+/* But VPP care */
+static inline int 
+SA_LEN(sockaddr x){
+	struct sockaddr_in *sa = (struct sockaddr_in*)&x;
+	short af = sa->sin_family;
+	//printf("AF=%hu\n",af);
+	if (af == AF_INET){
+		return sizeof(struct sockaddr_in);
+	}else if (af == AF_INET6){
+		return sizeof(struct sockaddr_in6);
+	}
+	return 32;
+};
 
 
 /*
diff --git a/sysdep/unix/io.c b/sysdep/unix/io.c
index 3d67d0a..b7f3930 100644
--- a/sysdep/unix/io.c
+++ b/sysdep/unix/io.c
@@ -431,36 +431,28 @@ sk_prepare_cmsgs6(sock *s, struct msghdr *msg, void *cbuf, size_t cbuflen)
 static inline int
 sk_set_ttl4(sock *s, int ttl)
 {
-  if (setsockopt(s->fd, SOL_IP, IP_TTL, &ttl, sizeof(ttl)) < 0)
-    ERR("IP_TTL");
-
+  // Doesn't support by VPP Host Stack
   return 0;
 }
 
 static inline int
 sk_set_ttl6(sock *s, int ttl)
 {
-  if (setsockopt(s->fd, SOL_IPV6, IPV6_UNICAST_HOPS, &ttl, sizeof(ttl)) < 0)
-    ERR("IPV6_UNICAST_HOPS");
-
+  // Doesn't support by VPP Host Stack
   return 0;
 }
 
 static inline int
 sk_set_tos4(sock *s, int tos)
 {
-  if (setsockopt(s->fd, SOL_IP, IP_TOS, &tos, sizeof(tos)) < 0)
-    ERR("IP_TOS");
-
+  // Doesn't support by VPP Host Stack
   return 0;
 }
 
 static inline int
 sk_set_tos6(sock *s, int tos)
 {
-  if (setsockopt(s->fd, SOL_IPV6, IPV6_TCLASS, &tos, sizeof(tos)) < 0)
-    ERR("IPV6_TCLASS");
-
+  // Doesn't support by VPP Host Stack
   return 0;
 }