Hi, I have sshd (OpenSSH_5.8p1) running on uCLinux (Linux version 2.6.19-uc1) Interactive sessions are working okay. Tunnel device seems to be set up but is not passing any traffic to other end. Debug output shows that tun channel 0 file descriptors are changed from 8/8 to -1/-1. Does anyone know how or what could be causing this? Client command is… ssh –w0:0 root@192.168.1.100 ifconfig tun0 10.0.0.1 pointopoint 10.0.0.2 netmask 255.255.255.255 My sshd debug output is shown below. Any help or tips would be appreciated, Regards, Fergal ---------- SSHD DEBUG OUTPUT ---------------------------------------------------- Jan 1 01:50:09 (none) auth.info sshd[2344]: Accepted password for root from 192.168.1.200 port 55408 ssh2 Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: Entering interactive session for SSH2. Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug2: fd 6 setting O_NONBLOCK Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug2: fd 7 setting O_NONBLOCK Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: server_init_dispatch_20 Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: server_input_channel_open: ctype tun@xxxxxxxxxxx rchan 0 win 2097152 max 32768 Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: sys_tun_open: tun0 mode 1 fd 8 Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug2: fd 8 setting O_NONBLOCK Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug3: fd 8 is O_NONBLOCK Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: channel 0: new [tun] Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: server_input_channel_open: confirm tun@xxxxxxxxxxx Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: server_input_channel_open: ctype session rchan 2 win 2097152 max 32768 Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: input_session_request Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: channel 1: new [server-session] Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug2: session_new: allocate (allocated 0 max 10) Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug3: session_unused: session id 0 unused Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: session_new: session 0 Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: session_open: channel 1 Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: session_open: session 0: link with channel 1 Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: server_input_channel_open: confirm session Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: server_input_channel_req: channel 1 request env reply 0 Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: session_by_channel: session 0 channel 1 Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: session_input_channel_req: session 0 req env Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug2: Ignoring env request LANG: disallowed name Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: server_input_channel_req: channel 1 request exec reply 1 Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: session_by_channel: session 0 channel 1 Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug1: session_input_channel_req: session 0 req exec Jan 1 01:50:09 (none) auth.debug sshd[2415]: debug1: permanently_set_uid: 0/0 Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug2: fd 4 setting TCP_NODELAY Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug3: packet_set_tos: set IP_TOS 0x08 Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug2: fd 11 setting O_NONBLOCK Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug2: fd 10 setting O_NONBLOCK Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug2: fd 13 setting O_NONBLOCK Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug2: channel 1: rcvd eof Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug2: channel 1: output open -> drain Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug2: channel 1: obuf empty Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug2: channel 1: close_write Jan 1 01:50:09 (none) auth.debug sshd[2344]: debug2: channel 1: output drain -> closed Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug1: Received SIGCHLD. Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug1: session_by_pid: pid 2415 Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug1: session_exit_message: session 0 channel 1 pid 2415 Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: channel 1: request exit-status confirm 0 Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug1: session_exit_message: release channel 1 Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: channel 1: read<=0 rfd 11 len 0 Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: channel 1: read failed Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: channel 1: close_read Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: channel 1: input open -> drain Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: channel 1: read 0 from efd 13 Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: channel 1: closing read-efd 13 Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: channel 1: ibuf empty Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: channel 1: send eof Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: channel 1: input drain -> closed Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: channel 1: send close Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: notify_done: reading Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug3: channel 1: will not send data after close Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: channel 1: rcvd close Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug3: channel 1: will not send data after close Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: channel 1: is dead Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: channel 1: gc: notify user Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug1: session_by_channel: session 0 channel 1 Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug1: session_close_by_channel: channel 1 child 0 Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug1: session_close: session 0 pid 0 Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug3: session_unused: session id 0 unused Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: channel 1: gc: user detached Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: channel 1: is dead Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug2: channel 1: garbage collecting Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug1: channel 1: free: server-session, nchannels 2 Jan 1 01:50:10 (none) auth.debug sshd[2344]: debug3: channel 1: status: The following connections are open:\r\n #0 tun (t4 r0 i0/0 o0/0 fd -1/-1 cc -1)\r\n #1 server-session (t4 r2 i3/0 o3/0 fd -1/-1 cc -1)\r\n _______________________________________________ openssh-unix-dev mailing list openssh-unix-dev@xxxxxxxxxxx https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev
