diff --git a/libc/dns/net/sethostent.c b/libc/dns/net/sethostent.c
index 66c305f..a743a54 100644
--- a/libc/dns/net/sethostent.c
+++ b/libc/dns/net/sethostent.c
@@ -129,6 +129,9 @@
 	hp = _hf_gethtbyname2(name, af, info);
 #endif
 	if (hp == NULL) {
+		if (*info->he == NETDB_INTERNAL && errno == ENOSPC) {
+			return NS_UNAVAIL; // glibc compatibility.
+		}
 		*info->he = HOST_NOT_FOUND;
 		return NS_NOTFOUND;
 	}
@@ -171,8 +174,12 @@
 
 		hp = netbsd_gethostent_r(hf, info->hp, info->buf, info->buflen,
 		    info->he);
-		if (hp == NULL)
+		if (hp == NULL) {
+			if (*info->he == NETDB_INTERNAL && errno == ENOSPC) {
+				goto nospc; // glibc compatibility.
+			}
 			break;
+		}
 
 		if (strcasecmp(hp->h_name, name) != 0) {
 			char **cp;
@@ -270,6 +277,7 @@
 	endhostent_r(&hf);
 
 	if (hp == NULL) {
+		if (errno == ENOSPC) return NS_UNAVAIL; // glibc compatibility.
 		*info->he = HOST_NOT_FOUND;
 		return NS_NOTFOUND;
 	}