Christian Garling <christian.garling@xxxxxxxxxxxxxx> writes: > Wireshark sniffing on the Ubuntu system shows the request for the referral, also the response with the correct hostname of the fileserver holding the share. After that nothing happens and cifs-utils throws "Invalid argument". I dont know what argument should be wrong. I also tried cifs-utils 6.7 from the git repo with no luck. I've just tested again kernel master against WS2016 with a link to a WS2012 server and I can: * mount to namespace and cd in the link * mount the link * mount a subdir under the link and everything works properly with vers=2.0 vers=2.1 vers=3.0. With vers=3.11 windows doesn't let me do the initial tree connect for some reason. mount -t cifs -vvv '//ws2016.suse.de/dfs3/link/sub' /mnt -o \ 'vers=3.0,domain=xyz,username=administrator,password=xyz' Have you made sure your system can resolve both the main server hostname and the target server (the hostname in the DFS query response)? Are you using vers=xyz option when mounting? -- Aurélien Aptel / SUSE Labs Samba Team GPG: 1839 CB5F 9F5B FB9B AA97 8C99 03C8 A49B 521B D5D3 SUSE Linux GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html