mkdir -p /var/run
-[ "$(nvram get il0macaddr)" = "00:90:4c:5f:00:2a" ] && {
+[ -z "$(nvram get il0macaddr)" ] || \
+[ "$(nvram get il0macaddr)" = "00:90:4c:5f:00:2a" ] && {
# if default wifi mac, set two higher than the lan mac
nvram set il0macaddr=$(nvram get et0macaddr|
awk '{OFS=FS=":";for(x=7,y=2;--x;){$x=sprintf("%02x",(y+="0x"$x)%256);y/=256}print}')