Hello,
Subject rolled out many times, but I can not set it up.
I decided to replace the router Mikrotik (6.37.2) , unfortunately, does not work automatically.
Tested on x86 and arm.
Physically plugged in another router or computer directly working properly.
The problem probably mtu. Packages from 1473 must be fragmented
ping 8.8.8.8 -f -l 1473
Pinging 8.8.8.8 with 1,473 bytes of data:
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Symptom so that it does not work for example google youtube
I set up
ip firewall mangle print
Flags: X - disabled, I - invalid, D - dynamic
0 chain = forward action = change-mss new-mss = 1472 passthrough = no tcp-flags = syn protocol = tcp out-interface = all-ethernet tcp-mss = 1472-65535 log = no log-prefix = “”
interface print detail
Flags: D - dynamic, X - disabled, R - running S - slave
0 R name = “ether1-I” default-name = “ether1” type = “ether” mtu = 1500 actual-mtu = 1500 l2mtu = 1600 mac-address = 00: 0D: B9: 18: 8D: F8 fast-path = no last-link-up time = nov / 26/2016 4:26:53 p.m. link-downs = 0
1R name = “ether2-O” default-name = “ether2” type = “ether” mtu = 1500 actual-mtu = 1500 l2mtu = 1600 mac-address = 00: 0D: B9: 18: 8D: F9 fast-path = no last-link-up time = nov / 26/2016 4:26:38 p.m. link-downs = 0
2 R name = “ether3-LAN” default-name = “ether3” type = “ether” mtu = 1500 actual-mtu = 1500 l2mtu = 1600 mac-address = 00: 0D: B9: 18: 8D FA fast-path = no last-link-up time = nov / 26/2016 4:26:38 p.m. link-downs = 0
I do not fasttrack
Please advice.