This is the second troubleshooting challenge. I would rate this a 2 / 3p ticket. You can find the configs of the routers here. For those of you using EVE I included the UNL file in there. The topology is as follows: R1 wants to be able to reach R6 via telnet. Match the output below. R1#telnet 2002:C0A8:3806::6 Trying 2002:C0A8:3806::6 ... Open R6>exit [Connection to 2002:C0A8:3806::6 closed by foreign host] You are not allowed to change anything on R4.