Hello my friends,
Well I’m new here.. and i wanna ask about something im going thru here in my country.
My ISP are blocking 2 routers from working together like for example.. my main pppoe router works fine when i connect lan cable from my main router to another WAN router it does take static ip normally but doesnt have internet.. ive been said that they might have blocked it thru natting or something.. is there any way that i can bypass this because i got a duplex place here and i cant put wireless repeaters only cabling works fine .. they said they cant do anything about it ..
Some ISPs could be messing with TTL in futile attempt to stop customers from connecting another router behind the main one. They could either set it to 1 for incoming traffic, so when it passes through first router, it goes down to 0 and second router doesn’t forward it further. They could also check TTL of outgoing packets, if they have one of common values used by operating systems minus 1 (which happens after passing through one router). If that would be the case, this should help:
/ip firewall mangle
add chain=forward in-interface=<WAN> action=change-ttl new-ttl=increment:1
add chain=forward out-interface=<WAN> action=change-ttl new-ttl=increment:1