Firewall unknown 0

RouterOS General
1

I noticed in the firewall log, it’s dropping many of them:

input: in:PPPoE out:(unknown 0), proto TCP (SYN), 44.**.**.**:48768->90.**.34.**:12628, len 44

¿Any suggestion?

2

¿Para qué?

out:(unknown 0) = deleted without matter where packet must go because some rules tell me to delete it now.