diff --git a/common/src/api/internal/shared.rs b/common/src/api/internal/shared.rs
index 15ab4c66ce..c8d8b1c786 100644
--- a/common/src/api/internal/shared.rs
+++ b/common/src/api/internal/shared.rs
@@ -141,6 +141,7 @@ pub struct PortConfigV1 {
     /// BGP peers on this port
     pub bgp_peers: Vec<BgpPeerConfig>,
     /// Whether or not to set autonegotiation
+    #[serde(default)]
     pub autoneg: bool,
 }
 
diff --git a/openapi/bootstrap-agent.json b/openapi/bootstrap-agent.json
index efd9c05fa9..0c5bd15050 100644
--- a/openapi/bootstrap-agent.json
+++ b/openapi/bootstrap-agent.json
@@ -512,6 +512,7 @@
           },
           "autoneg": {
             "description": "Whether or not to set autonegotiation",
+            "default": false,
             "type": "boolean"
           },
           "bgp_peers": {
@@ -559,7 +560,6 @@
         },
         "required": [
           "addresses",
-          "autoneg",
           "bgp_peers",
           "port",
           "routes",
diff --git a/openapi/nexus-internal.json b/openapi/nexus-internal.json
index 82c799b78d..7785d232d9 100644
--- a/openapi/nexus-internal.json
+++ b/openapi/nexus-internal.json
@@ -4242,6 +4242,7 @@
           },
           "autoneg": {
             "description": "Whether or not to set autonegotiation",
+            "default": false,
             "type": "boolean"
           },
           "bgp_peers": {
@@ -4289,7 +4290,6 @@
         },
         "required": [
           "addresses",
-          "autoneg",
           "bgp_peers",
           "port",
           "routes",
diff --git a/openapi/sled-agent.json b/openapi/sled-agent.json
index 6a0d692e99..9951392e98 100644
--- a/openapi/sled-agent.json
+++ b/openapi/sled-agent.json
@@ -5339,6 +5339,7 @@
           },
           "autoneg": {
             "description": "Whether or not to set autonegotiation",
+            "default": false,
             "type": "boolean"
           },
           "bgp_peers": {
@@ -5386,7 +5387,6 @@
         },
         "required": [
           "addresses",
-          "autoneg",
           "bgp_peers",
           "port",
           "routes",
diff --git a/openapi/wicketd.json b/openapi/wicketd.json
index 32e3b70de2..804b2029c6 100644
--- a/openapi/wicketd.json
+++ b/openapi/wicketd.json
@@ -1547,6 +1547,7 @@
           },
           "autoneg": {
             "description": "Whether or not to set autonegotiation",
+            "default": false,
             "type": "boolean"
           },
           "bgp_peers": {
@@ -1594,7 +1595,6 @@
         },
         "required": [
           "addresses",
-          "autoneg",
           "bgp_peers",
           "port",
           "routes",
diff --git a/schema/rss-sled-plan.json b/schema/rss-sled-plan.json
index 5086c38a9c..2ef7a7b58a 100644
--- a/schema/rss-sled-plan.json
+++ b/schema/rss-sled-plan.json
@@ -366,7 +366,6 @@
       "type": "object",
       "required": [
         "addresses",
-        "autoneg",
         "bgp_peers",
         "port",
         "routes",
@@ -384,6 +383,7 @@
         },
         "autoneg": {
           "description": "Whether or not to set autonegotiation",
+          "default": false,
           "type": "boolean"
         },
         "bgp_peers": {