Is it possible to accept packet (or drop) direct in preroute without moving into input or forward chain?

I don't speak about "some" packet, but about the concrete packet processed with concrete rules, that is accepted in preroute. I have 4514 ICMP packets that are accepted in raw (every ICMP is accepted in preroute chain) now, but 398 from this ICMP packets go into input and they are accepted...

I have /ip firewall filter add action=accept chain=input comment="defconf: accept ICMP" log=yes log-prefix=fw-icmp protocol=icmp and /ip firewall raw add action=accept chain=prerouting log=yes log-prefix=raw-icmp protocol=icmp most ICMP packets are accepted only from raw, but sometimes (1/...

One address can be used on many places: firewall rules, NAT etc. It would be nice to have list with address aliases (server1=x.x.x.x,...) and then use {server1} in firewall rules etc. instead of x.x.x.x
edit: or list with aliases for any value (IP,MAC, port,...)

Is there some stable openwrt image for 6.38.1(951G-2HnD)? I tried different version from http://openwrt.wk.cz/ (AA, trunk) on some last few ROS versions and it's very unstable with:
"system,error,critical router was rebooted without proper shutdown by watchdog timer"

exists subject somewhere?