I have a RB750GL and have the problem on both ROS 5.14 and 5.15.
I am trying to change from within a script the mtu of my lan interfaces.
This is the code I am running from within the “Run After Reset” script of system reset configuration:
# wait for interfaces
:while ([/interface ethernet find] = "") do={ :delay 1s; };
/interface ethernet
set 0 arp=proxy-arp auto-negotiation=yes bandwidth=unlimited/unlimited disabled=\
no full-duplex=yes l2mtu=1520 mac-address=00:0C:42:AA:7B:CE master-port=\
none mtu=1492 name=ether1 speed=100Mbps
set 1 arp=enabled auto-negotiation=yes bandwidth=unlimited/unlimited disabled=\
no full-duplex=yes l2mtu=1520 mac-address=00:0C:42:AA:7B:CF master-port=\
none mtu=1492 name=ether2 speed=100Mbps
set 2 arp=enabled auto-negotiation=yes bandwidth=unlimited/unlimited disabled=\
no full-duplex=yes l2mtu=1520 mac-address=00:0C:42:AA:7B:D0 master-port=\
none mtu=1492 name=ether3 speed=100Mbps
set 3 arp=enabled auto-negotiation=yes bandwidth=unlimited/unlimited disabled=\
no full-duplex=yes l2mtu=1520 mac-address=00:0C:42:AA:7B:D1 master-port=\
none mtu=1492 name=ether4 speed=100Mbps
set 4 arp=enabled auto-negotiation=yes bandwidth=unlimited/unlimited disabled=\
no full-duplex=yes l2mtu=1520 mac-address=00:0C:42:AA:7B:D2 master-port=\
none mtu=1492 name=ether5 speed=100Mbps
After doing the reset I can connect using winbox however winbox shows empty windows: there are no interfaces at all, I cant get a terminal, there is nothing. Most of the time the winbox connection breaks after a minute or so.
Am I doing something wrong or is this a bug that I should report?