Originally Posted by Chiacomo
Is there a way to adjust the MTU on the TiVO?
In theory, if your router is doing the right thing, pmtu discovery should automatically adjust the mtu appropriately. There is some information here
on how pmtu discovery works.
On an unhacked tivo, I don't believe there is any way to adjust the mtu manually. On a hacked tivo, you can use ifconfig to set the MTU.
If the router has a way to adjust the LAN MTU, you might try setting it to the same value as the WAN MTU (1492). Also, if there is any control in the router over what to do with packets that must be fragmented, tweaking that setting may be helpful too.