diff --git a/root/etc/functions.sh b/root/etc/functions.sh
index 1f9afb2948a..2b85e15cbe0 100755
--- a/root/etc/functions.sh
+++ b/root/etc/functions.sh
@@ -104,5 +104,7 @@ ifdown () (
   type=$1
   debug "### ifdown $type ###"
   if=$(nvram_get ${type}_ifname)
-  if_valid $if && $DEBUG ifconfig $if down
+  if_valid $if || return
+  kill $(cat /var/run/${if}.pid 2>-)2>-
+  $DEBUG ifconfig $if down
 )
diff --git a/root/etc/init.d/S10boot b/root/etc/init.d/S10boot
index 45b9dd28b4a..c7c9ba25690 100755
--- a/root/etc/init.d/S10boot
+++ b/root/etc/init.d/S10boot
@@ -2,11 +2,13 @@
 sysctl -p
 echo "S" > /proc/jffs2_bbc
 
+mkdir -p /var/run
+
 # networking stub
 [ "$(nvram get il0macaddr)" = "00:90:4c:5f:00:2a" ] && {
-  # force unique mac
+  # force unique wireless mac
   nvram set il0macaddr=$(nvram get et0macaddr|
-  awk -F ":" '{for(x=6,y=2;x;x--){y+=int("0x"$x);$x=sprintf("%02x",y%256);y/=256}gsub(" ",":");print$0}')
+  awk -F ":" '{for(x=6,y=2;x;x--){y+=int("0x"$x);$x=sprintf("%02x",y%256);y/=256}gsub(" ",":");print}')
 }
 
 insmod et
diff --git a/root/etc/init.d/S45firewall b/root/etc/init.d/S45firewall
index 40ac81a49f5..4885c7c088b 100755
--- a/root/etc/init.d/S45firewall
+++ b/root/etc/init.d/S45firewall
@@ -18,5 +18,6 @@ $IPT -t filter -A INPUT -i $WAN -j REJECT --reject-with icmp-port-unreachable
 $IPT -t filter -A FORWARD -m state --state INVALID -j DROP 
 $IPT -t filter -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT 
 $IPT -t filter -A FORWARD -i $WAN -m state --state NEW,INVALID -j DROP
+$IPT -t filter -A FORWARD -o $WAN -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
 
 $IPT -t nat -A POSTROUTING -o $WAN -j MASQUERADE
diff --git a/root/etc/nvram.overrides b/root/etc/nvram.overrides
index e155df15a26..e334d751987 100644
--- a/root/etc/nvram.overrides
+++ b/root/etc/nvram.overrides
@@ -1,5 +1,6 @@
 # NVRAM overrides
 # This file handles the NVRAM quirks of various hardware
+# this is not a replacement for nvram.
 
 # linksys bug has lan doing dhcp; force static
 lan_proto="static"