diff --git a/aos/network/sctp_client.cc b/aos/network/sctp_client.cc
index fa1828d..a9567a2 100644
--- a/aos/network/sctp_client.cc
+++ b/aos/network/sctp_client.cc
@@ -62,8 +62,7 @@
   scheduler.assoc_value = SCTP_SS_PRIO;
   if (setsockopt(fd(), IPPROTO_SCTP, SCTP_STREAM_SCHEDULER, &scheduler,
                  sizeof(scheduler)) != 0) {
-    LOG_FIRST_N(WARNING, 1) << "Failed to set scheduler: " << strerror(errno)
-                            << " [" << errno << "]";
+    PLOG(FATAL) << "Failed to set scheduler.";
   }
 #endif
 }
diff --git a/aos/network/sctp_server.cc b/aos/network/sctp_server.cc
index f90b21b..f4dba39 100644
--- a/aos/network/sctp_server.cc
+++ b/aos/network/sctp_server.cc
@@ -81,8 +81,7 @@
   scheduler.assoc_value = SCTP_SS_PRIO;
   if (setsockopt(fd(), IPPROTO_SCTP, SCTP_STREAM_SCHEDULER, &scheduler,
                  sizeof(scheduler)) != 0) {
-    LOG_FIRST_N(WARNING, 1) << "Failed to set scheduler: " << strerror(errno)
-                            << " [" << errno << "]";
+    PLOG(FATAL) << "Failed to set scheduler.";
   }
 #endif
 }
@@ -99,8 +98,13 @@
   sctp_priority.stream_value = priority;
   if (setsockopt(fd(), IPPROTO_SCTP, SCTP_STREAM_SCHEDULER_VALUE,
                  &sctp_priority, sizeof(sctp_priority)) != 0) {
-    LOG_FIRST_N(WARNING, 1) << "Failed to set scheduler: " << strerror(errno)
-                            << " [" << errno << "]";
+    // Treat "Protocol not available" as equivalent to the
+    // SCTP_STREAM_SCHEDULER_VALUE not being defined--silently ignore it.
+    if (errno == ENOPROTOOPT) {
+      VLOG(1) << "Stream scheduler not supported on this kernel.";
+      return;
+    }
+    PLOG(FATAL) << "Failed to set scheduler.";
   }
 #endif
 }