diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 9b1993096446cb1ae97ee3f0f86726c1bc9c3397..a7575fcd8b2ce82db1b5bb8ecc860b8e5e2a7614 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -537,7 +537,6 @@ VIR_ENUM_IMPL(virQEMUCaps,
               /* 335 */
               "bochs-display",
               "migration-file-drop-cache",
-              "net-socket-dgram",
               "dbus-vmstate",
     );
 
@@ -4394,10 +4393,6 @@ virQEMUCapsInitQMPVersionCaps(virQEMUCapsPtr qemuCaps)
         ARCH_IS_PPC64(qemuCaps->arch)) {
         virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACHINE_PSERIES_MAX_CPU_COMPAT);
     }
-
-    /* -net socket,fd= with dgram socket (for ex, with slirp helper) */
-    if (qemuCaps->version >= 4000000)
-        virQEMUCapsSet(qemuCaps, QEMU_CAPS_NET_SOCKET_DGRAM);
 }
 
 
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index 54f91151c6912dd2a1e6eea983773ce3201912c6..fe80fb53919e68434919a0d7b5743a1a9bc58750 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -518,7 +518,6 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */
     /* 335 */
     QEMU_CAPS_DEVICE_BOCHS_DISPLAY, /* -device bochs-display */
     QEMU_CAPS_MIGRATION_FILE_DROP_CACHE, /* migration with disk cache on is safe for type='file' disks */
-    QEMU_CAPS_NET_SOCKET_DGRAM, /* -net socket,fd= with dgram socket */
     QEMU_CAPS_DBUS_VMSTATE, /* -object dbus-vmstate */
 
     QEMU_CAPS_LAST /* this must always be the last item */
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml
index 1627b2cb5ef2e9160ce875887065a586b5b042e3..20f119665b9e1bc5f3c622cf502f896a6ac0eb25 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml
@@ -165,7 +165,6 @@
   <flag name='nbd-bitmap'/>
   <flag name='bochs-display'/>
   <flag name='migration-file-drop-cache'/>
-  <flag name='net-socket-dgram'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>61700758</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml
index 73859becab9a76b33a4ea32b88fe6e4f211606af..9ea6f4d0464915305dcae0f71ccec7be3984cbae 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml
@@ -170,7 +170,6 @@
   <flag name='nbd-bitmap'/>
   <flag name='bochs-display'/>
   <flag name='migration-file-drop-cache'/>
-  <flag name='net-socket-dgram'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900758</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml b/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
index ab6a774c3faff90341d781ed405c83a1fb953ee5..7503c2dbcdc5d2f8c72a5dce30974d31f4f17edd 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
@@ -168,7 +168,6 @@
   <flag name='nbd-bitmap'/>
   <flag name='bochs-display'/>
   <flag name='migration-file-drop-cache'/>
-  <flag name='net-socket-dgram'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>0</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml b/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
index f731e7b4faa3f0ecd2897bbbb81c09ce460c47f1..4a94179ee7ace2ecdb56506071aff62e5ca85e10 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
@@ -168,7 +168,6 @@
   <flag name='nbd-bitmap'/>
   <flag name='bochs-display'/>
   <flag name='migration-file-drop-cache'/>
-  <flag name='net-socket-dgram'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>0</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.s390x.xml b/tests/qemucapabilitiesdata/caps_4.0.0.s390x.xml
index 6cad000a114dbe76003946d971a27f50cd709f2d..ef802f3d1f4219723b9a101f6869cd7351a28f2a 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.s390x.xml
@@ -132,7 +132,6 @@
   <flag name='bitmap-merge'/>
   <flag name='nbd-bitmap'/>
   <flag name='migration-file-drop-cache'/>
-  <flag name='net-socket-dgram'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>39100758</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
index 79593c467a84ce8176d49830d36c5afba4b6da64..87c95f4d189380d5ca45335a9bb1c456b7b2f141 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
@@ -207,7 +207,6 @@
   <flag name='x86-max-cpu'/>
   <flag name='bochs-display'/>
   <flag name='migration-file-drop-cache'/>
-  <flag name='net-socket-dgram'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100758</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml
index 05e6538e37b5ebe90bfcc8bf3248ded84176a70f..f4583d7fe7d28387b154788037435dc733112206 100644
--- a/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml
@@ -209,7 +209,6 @@
   <flag name='canonical-cpu-features'/>
   <flag name='bochs-display'/>
   <flag name='migration-file-drop-cache'/>
-  <flag name='net-socket-dgram'/>
   <version>4000050</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100759</microcodeVersion>