Use postmaster -i only on certain platforms.

src/test/regress/run_check.sh

 #!/bin/sh
 #
-# $Header: /cvsroot/pgsql/src/test/regress/Attic/run_check.sh,v 1.16 2000/05/18 15:37:56 momjian Exp $
+# $Header: /cvsroot/pgsql/src/test/regress/Attic/run_check.sh,v 1.17 2000/05/18 15:58:43 momjian Exp $
 
 # ----------
 # Check call syntax
@@ -62,8 +62,10 @@ extratests="$*"
 if [ "x$hostname" = "xwin" -o "x$hostname" = "xi386-pc-qnx" ]
 then
     HOSTLOC="-h localhost"
+    USETCPIP="-i"
 else
     HOSTLOC=""
+    USETCPIP=""
 fi
 
 # ----------
@@ -192,7 +194,7 @@ fi
 # him some time to pass the WAL recovery code. 
 #----------
 echo "=============== Starting regression postmaster         ================"
-postmaster -D $PGDATA -i -p $PGPORT $PMOPTIONS >$LOGDIR/postmaster.log 2>&1 &
+postmaster -D $PGDATA $USETCPIP -p $PGPORT $PMOPTIONS >$LOGDIR/postmaster.log 2>&1 &
 PMPID=$!
 sleep 2