diff --git a/Shorewall/Perl/Shorewall/Providers.pm b/Shorewall/Perl/Shorewall/Providers.pm
index 844ca8e3a..7aadd9c31 100644
--- a/Shorewall/Perl/Shorewall/Providers.pm
+++ b/Shorewall/Perl/Shorewall/Providers.pm
@@ -1172,18 +1172,18 @@ sub add_a_route( ) {
 
     if ( $gateway ne '-' ) {
 	if ( $device ne '-' ) {
-	    push @$routes, qq(run_ip route replace $dest via $gateway dev $physical table $id);
+	    push @$routes, qq(run_ip route add $dest via $gateway dev $physical table $id);
 	    push @$routes, q(echo "$IP ) . qq(-$family route del $dest via $gateway dev $physical table $id > /dev/null 2>&1" >> \${VARDIR}/undo_${provider}_routing) if $number >= DEFAULT_TABLE;
 	} elsif ( $null ) {
-	    push @$routes, qq(run_ip route replace $null $dest table $id);
+	    push @$routes, qq(run_ip route add $null $dest table $id);
 	    push @$routes, q(echo "$IP ) . qq(-$family route del $null $dest table $id > /dev/null 2>&1" >> \${VARDIR}/undo_${provider}_routing) if $number >= DEFAULT_TABLE;
 	} else {
-	    push @$routes, qq(run_ip route replace $dest via $gateway table $id);
+	    push @$routes, qq(run_ip route add $dest via $gateway table $id);
 	    push @$routes, q(echo "$IP ) . qq(-$family route del $dest via $gateway table $id > /dev/null 2>&1" >> \${VARDIR}/undo_${provider}_routing) if $number >= DEFAULT_TABLE;
 	}
     } else {
 	fatal_error "You must specify a device for this route" unless $physical;
-	push @$routes, qq(run_ip route replace $dest dev $physical table $id);
+	push @$routes, qq(run_ip route add $dest dev $physical table $id);
 	push @$routes, q(echo "$IP ) . qq(-$family route del $dest dev $physical table $id > /dev/null 2>&1" >> \${VARDIR}/undo_${provider}_routing) if $number >= DEFAULT_TABLE;
     }
 
diff --git a/docs/MultiISP.xml b/docs/MultiISP.xml
index c359412ac..6288338a6 100644
--- a/docs/MultiISP.xml
+++ b/docs/MultiISP.xml
@@ -1357,20 +1357,12 @@ dmz             192.168.14.0/26 blackhole
 </programlisting>
 
             <para>The above generates the following 3 statements for execution
-            upon Shorewall startup.</para>
-
-            <para>Shorewall 4.5.14:</para>
+            upon Shorewall startup:</para>
 
             <programlisting>ip route add blackhole 10.0.0.0/8 table main
 ip route add blackhole 82.32.0.0/12 table dmz
 ip route add blackhole 192.168.14.0/26 table dmz</programlisting>
 
-            <para>Shorewall 4.5.15 and later:</para>
-
-            <programlisting>ip route replace blackhole 10.0.0.0/8 table main
-ip route replace blackhole 82.32.0.0/12 table dmz
-ip route replace blackhole 192.168.14.0/26 table dmz</programlisting>
-
             <important>
               <para>When blackhole routes are added to a
               <replaceable>provider</replaceable> (including 'main'),
@@ -1423,9 +1415,9 @@ dmz             192.168.14.0/26 unreachable
             <para>The above generates the following 3 statements for execution
             upon Shorewall startup:</para>
 
-            <programlisting>ip route replace unreachable 10.0.0.0/8 table main
-ip route replace unreachable 82.32.0.0/12 table dmz
-ip route replace unreachable 192.168.14.0/26 table dmz</programlisting>
+            <programlisting>ip route add unreachable 10.0.0.0/8 table main
+ip route add unreachable 82.32.0.0/12 table dmz
+ip route add unreachable 192.168.14.0/26 table dmz</programlisting>
 
             <important>
               <para>When prohibit or unreachable routes are added to a