I guys. I setup two mikrotik routers with L2TP and EOIP and everything works over the tunnels as expected. The problem I have is that web pages do not load correctly whenever I enable the EOIP interface within the bridge. More specifically it looks like any website that provides a 300 doesn't forward as expected. Has anybody else seen this issue? Where might I start to troubleshoot the issue? Any help would be appreciated.

The issue seems to be MTU related.

Usually a eoip tunnel has mtu op 1500 or 1458

lt2p tunnel has 1450 as default mtu.

Try and set the l2tp to 1500 + and give it a test again