diff --git a/sys/kern/uipc_usrreq.c b/sys/kern/uipc_usrreq.c
--- a/sys/kern/uipc_usrreq.c
+++ b/sys/kern/uipc_usrreq.c
@@ -157,7 +157,7 @@
 static u_long	unpst_sendspace = PIPSIZ;
 static u_long	unpst_recvspace = PIPSIZ;
 static u_long	unpdg_sendspace = 2*1024;	/* really max datagram size */
-static u_long	unpdg_recvspace = 4*1024;
+static u_long	unpdg_recvspace = 16*1024;	/* support 8KB syslog msgs */
 static u_long	unpsp_sendspace = PIPSIZ;	/* really max datagram size */
 static u_long	unpsp_recvspace = PIPSIZ;