title: telnet to an emulation router got an interrupt: "Connection closed by foreign host" once connected
body: <p>i'm using qemu to emulate the router of which firmware was IGD...CN-Netcore(NR268), this router supports telnet service and it does. i run the telnet service by code &quot;busybox telnetd&quot;, but any machine could not keep the connection but get an interrupt! i tried telneting itself, still got an response &quot;Connection closed by foreign host&quot;. if i had any chances to make it work? begging for help please.
  i heard this may not be the problem of system and network, but i don't know the real reason.</p>