For what it is worth, I also have the same enncryption aes256-cts-hmac-sha1-96 (and same problem). The tickets come from MIT Kerberos on Ubuntu 18.04; the NFS servers are Ubuntu 18.04 using krb5p security option.
For what it is worth, I also have the same enncryption aes256- cts-hmac- sha1-96 (and same problem). The tickets come from MIT Kerberos on Ubuntu 18.04; the NFS servers are Ubuntu 18.04 using krb5p security option.