smb not working for me on 10.13.6 (dtruss inside)

Hi,

my Finder is not able to connect to ANY smb-share. It doesn't matter, if the network-folder

• is on linux (SAMBA 4.1.17)
• is on OSX (10.11.6)
• is on Windowsserver
• is public for everyone or in a ADS

It simply stops in the Finder with "Couldn't connect"

In the terminal you see the following

$ mount_smbfs //johndoe@server/johndoe test mount_smbfs: server connection failed: No such file or directory

on a Debian-VM on the same macbookpro following command works perfectly

$ mount.cifs -o username= johndoe //server/johndoe test

In the logs is nothing despite having kloglevel=15 in /etc/nsmb.conf and i have already tried 'configureLocalKDC'

So i disabled System Integrity Protection and made a dtruss for the first command.

dtruss -cf mount_smbfs //johndoe@server/johndoe test >& mount.log

mount.log has 2050 open-calls for the /dev/nsmb..

15734/0x1b2bd3: open("/dev/nsmb\0", 0x2, 0x5F719DF8) = -1 Err#2 15734/0x1b2bd3: open("/dev/nsmb0\0", 0x2, 0xFFFFFFFFE84BC430) = -1 Err#6 .... 2050times ... 15734/0x1b2bd3: open("/dev/nsmb3fd\0", 0x2, 0xFFFFFFFFE84BC820) = -1 Err#2 15734/0x1b2bd3: open("/dev/nsmb3fe\0", 0x2, 0xFFFFFFFFE84BC820) = -1 Err#2 15734/0x1b2bd3: open("/dev/nsmb3ff\0", 0x2, 0xFFFFFFFFE84BC820) = -1 Err#2

/dev/nsmb0 exists .. the other ones not.

smbfs-module is loaded

$ kextstat | grep smb 184 0 0xffffff7f8700b000 0x63000 0x63000 com.apple.filesystems.smbfs (3.2.3) 8BD2FFC5-F081-3B29-B2AB-BEF58E24BAAD

Has anyone hints, what I could do? I already tried mb_neg=smb3_only, protocol_vers_map and so on

Thanks