diff --git a/src/internal/syscall/unix/net_darwin.go b/src/internal/syscall/unix/net_darwin.go
index bbaa94b0d21..7e8f2ac12c6 100644
--- a/src/internal/syscall/unix/net_darwin.go
+++ b/src/internal/syscall/unix/net_darwin.go
@@ -16,12 +16,13 @@ const (
 	AI_V4MAPPED  = 0x800
 	AI_MASK      = 0x1407
 
-	EAI_AGAIN    = 2
-	EAI_NODATA   = 7
-	EAI_NONAME   = 8
-	EAI_SERVICE  = 9
-	EAI_SYSTEM   = 11
-	EAI_OVERFLOW = 14
+	EAI_ADDRFAMILY = 1
+	EAI_AGAIN      = 2
+	EAI_NODATA     = 7
+	EAI_NONAME     = 8
+	EAI_SERVICE    = 9
+	EAI_SYSTEM     = 11
+	EAI_OVERFLOW   = 14
 
 	NI_NAMEREQD = 4
 )
diff --git a/src/net/cgo_unix.go b/src/net/cgo_unix.go
index bc374c2c768..e866150f29a 100644
--- a/src/net/cgo_unix.go
+++ b/src/net/cgo_unix.go
@@ -16,6 +16,7 @@ import (
 	"errors"
 	"internal/bytealg"
 	"net/netip"
+	"runtime"
 	"syscall"
 	"unsafe"
 
@@ -195,6 +196,16 @@ func cgoLookupHostIP(network, name string) (addrs []IPAddr, err error) {
 			return nil, newDNSError(err, name, "")
 		case _C_EAI_NONAME, _C_EAI_NODATA:
 			return nil, newDNSError(errNoSuchHost, name, "")
+		case _C_EAI_ADDRFAMILY:
+			if runtime.GOOS == "freebsd" {
+				// FreeBSD began returning EAI_ADDRFAMILY for valid hosts without
+				// an A record in 13.2. We previously returned "no such host" for
+				// this case.
+				//
+				// https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=273912
+				return nil, newDNSError(errNoSuchHost, name, "")
+			}
+			fallthrough
 		default:
 			return nil, newDNSError(addrinfoErrno(gerrno), name, "")
 		}
diff --git a/src/net/cgo_unix_cgo.go b/src/net/cgo_unix_cgo.go
index d38ae0a84f2..c4b8197c620 100644
--- a/src/net/cgo_unix_cgo.go
+++ b/src/net/cgo_unix_cgo.go
@@ -22,6 +22,11 @@ package net
 #define EAI_NODATA -5
 #endif
 
+// If nothing else defined EAI_ADDRFAMILY, make sure it has a value.
+#ifndef EAI_ADDRFAMILY
+#define EAI_ADDRFAMILY -9
+#endif
+
 // If nothing else defined EAI_OVERFLOW, make sure it has a value.
 #ifndef EAI_OVERFLOW
 #define EAI_OVERFLOW -12
@@ -31,19 +36,20 @@ import "C"
 import "unsafe"
 
 const (
-	_C_AF_INET      = C.AF_INET
-	_C_AF_INET6     = C.AF_INET6
-	_C_AF_UNSPEC    = C.AF_UNSPEC
-	_C_EAI_AGAIN    = C.EAI_AGAIN
-	_C_EAI_NODATA   = C.EAI_NODATA
-	_C_EAI_NONAME   = C.EAI_NONAME
-	_C_EAI_SERVICE  = C.EAI_SERVICE
-	_C_EAI_OVERFLOW = C.EAI_OVERFLOW
-	_C_EAI_SYSTEM   = C.EAI_SYSTEM
-	_C_IPPROTO_TCP  = C.IPPROTO_TCP
-	_C_IPPROTO_UDP  = C.IPPROTO_UDP
-	_C_SOCK_DGRAM   = C.SOCK_DGRAM
-	_C_SOCK_STREAM  = C.SOCK_STREAM
+	_C_AF_INET        = C.AF_INET
+	_C_AF_INET6       = C.AF_INET6
+	_C_AF_UNSPEC      = C.AF_UNSPEC
+	_C_EAI_ADDRFAMILY = C.EAI_ADDRFAMILY
+	_C_EAI_AGAIN      = C.EAI_AGAIN
+	_C_EAI_NODATA     = C.EAI_NODATA
+	_C_EAI_NONAME     = C.EAI_NONAME
+	_C_EAI_SERVICE    = C.EAI_SERVICE
+	_C_EAI_OVERFLOW   = C.EAI_OVERFLOW
+	_C_EAI_SYSTEM     = C.EAI_SYSTEM
+	_C_IPPROTO_TCP    = C.IPPROTO_TCP
+	_C_IPPROTO_UDP    = C.IPPROTO_UDP
+	_C_SOCK_DGRAM     = C.SOCK_DGRAM
+	_C_SOCK_STREAM    = C.SOCK_STREAM
 )
 
 type (
diff --git a/src/net/cgo_unix_syscall.go b/src/net/cgo_unix_syscall.go
index 735dcdfe368..9cfc5783721 100644
--- a/src/net/cgo_unix_syscall.go
+++ b/src/net/cgo_unix_syscall.go
@@ -14,19 +14,20 @@ import (
 )
 
 const (
-	_C_AF_INET      = syscall.AF_INET
-	_C_AF_INET6     = syscall.AF_INET6
-	_C_AF_UNSPEC    = syscall.AF_UNSPEC
-	_C_EAI_AGAIN    = unix.EAI_AGAIN
-	_C_EAI_NONAME   = unix.EAI_NONAME
-	_C_EAI_SERVICE  = unix.EAI_SERVICE
-	_C_EAI_NODATA   = unix.EAI_NODATA
-	_C_EAI_OVERFLOW = unix.EAI_OVERFLOW
-	_C_EAI_SYSTEM   = unix.EAI_SYSTEM
-	_C_IPPROTO_TCP  = syscall.IPPROTO_TCP
-	_C_IPPROTO_UDP  = syscall.IPPROTO_UDP
-	_C_SOCK_DGRAM   = syscall.SOCK_DGRAM
-	_C_SOCK_STREAM  = syscall.SOCK_STREAM
+	_C_AF_INET        = syscall.AF_INET
+	_C_AF_INET6       = syscall.AF_INET6
+	_C_AF_UNSPEC      = syscall.AF_UNSPEC
+	_C_EAI_ADDRFAMILY = unix.EAI_ADDRFAMILY
+	_C_EAI_AGAIN      = unix.EAI_AGAIN
+	_C_EAI_NONAME     = unix.EAI_NONAME
+	_C_EAI_SERVICE    = unix.EAI_SERVICE
+	_C_EAI_NODATA     = unix.EAI_NODATA
+	_C_EAI_OVERFLOW   = unix.EAI_OVERFLOW
+	_C_EAI_SYSTEM     = unix.EAI_SYSTEM
+	_C_IPPROTO_TCP    = syscall.IPPROTO_TCP
+	_C_IPPROTO_UDP    = syscall.IPPROTO_UDP
+	_C_SOCK_DGRAM     = syscall.SOCK_DGRAM
+	_C_SOCK_STREAM    = syscall.SOCK_STREAM
 )
 
 type (