diff --git a/drivers/modem/quectel-bg9x.c b/drivers/modem/quectel-bg9x.c
index acd50af34c4..fcae3c6b193 100644
--- a/drivers/modem/quectel-bg9x.c
+++ b/drivers/modem/quectel-bg9x.c
@@ -1085,6 +1085,19 @@ static struct net_if_api api_funcs = {
 
 static bool offload_is_supported(int family, int type, int proto)
 {
+	if (family != AF_INET &&
+	    family != AF_INET6) {
+		return false;
+	}
+
+	if (type != SOCK_STREAM) {
+		return false;
+	}
+
+	if (proto != IPPROTO_TCP) {
+		return false;
+	}
+
 	return true;
 }