A manual snapmirror doesn't work either. The above output was from a sim running 8.1.4 not 8.2. I was just testing to make sure it wasn't an issue with 8.2 but it's exactly the same. Full output below from the 8.2 sim.
sim02> vfiler dr activate cifsvfiler@sim01
CIFS local server is running.
Fri Mar 28 17:43:58 GMT [cifsvfiler@sim02:cifs.startup.local.succeeded:info]: CIFS: CIFS local server is running.
Fri Mar 28 17:43:58 GMT [sim02:httpd.config.mime.missing:warning]: /etc/httpd.mimetypes.sample file is missing.
Fri Mar 28 17:43:58 GMT [cifsvfiler@sim02:httpd.config.mime.missing:warning]: /etc/httpd.mimetypes file is missing.
Fri Mar 28 17:43:58 GMT [cifsvfiler@sim02:httpd.config.mime.missing:warning]: /etc/httpd.mimetypes.sample file is missing.
Vfiler cifsvfiler activated.
e0a: flags=0xe48867<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.0.21 netmask 0xffffff00 broadcast 192.168.0.255
ether 00:0c:29:0e:d8:74 (auto-1000t-fd-up) flowcontrol full
sim02> Fri Mar 28 17:43:59 GMT [sim02:cmds.vfiler.dr.activated:info]: Disaster recovery backup vFiler unit: 'cifsvfiler' of the vFiler unit at remote storage system: 'sim01' was activated.
sim02> ifconfig e0a
e0a: flags=0xe48867<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.0.21 netmask 0xffffff00 broadcast 192.168.0.255
inet 192.168.0.120 netmask 0xffffff00 broadcast 192.168.0.255
ether 00:0c:29:0e:d8:74 (auto-1000t-fd-up) flowcontrol full
sim01> vfiler dr resync -c secure cifsvfiler@sim02
sim02's Administrative login: root
sim02's Administrative password:
cannot resync path /vol/cifsvfiler_root: transfer aborted because of network error
sim01> Fri Mar 28 17:58:44 GMT [sim01:replication.dst.resync.failed:error]: SnapMirror resync of cifsvfiler_root to sim02:cifsvfiler_root : transfer aborted because of network error.
[sim01:snapmirror.src.resync.toSelf:error]: SnapMirror cannot resync volume cifs to itself, operation not permitted.