If a client tries to reconnect a handle that has a Durable Handle v2 and a handle lease, when reconnecting in DH2C the server calls smbd_smb2_create_durable_lease_check() as part of the handle checks.

There a strcmp is done between the path on the reconnected fsp and the on-the-wire SMB2 path. The former will be "foo/bar" while the latter will be "foo\\bar", so the check fails:

[10 2018/07/17 12:46:04.907479 ../source3/smbd/smb2_create.c:423 smbd_smb2_create_durable_lease_check]
  Lease requested for file dir\bigfile, reopened file is named dir/bigfile

Have patch, need bugnubmer...