cannot add did device to diskset

cluster 3.1 9/04

root@FLXDB6 # metaset -s branch-ds -a -h FLXDB6 FLXDB7
root@FLXDB6 # metaset -s branch-ds -t
root@FLXDB6 # metaset -s branch-ds -a /dev/did/rdsk/d6
metaset: FLXDB6: branch-ds: drive d6 is not common with host FLXDB7

root@FLXDB6 # metaset -s branch-ds -d -h FLXDB7
root@FLXDB6 # metaset -s branch-ds -a /dev/did/rdsk/d6
metaset: FLXDB6: No such file or directory

root@FLXDB6 # ls -l /dev/did/rdsk/d6s2
lrwxrwxrwx   1 root     root          39 Nov 27 12:59 /dev/did/rdsk/d6s2 -> ../../../devices/pseudo/did@0:6,6s2,raw
root@FLXDB6 # ls -l /dev/did/rdsk/d6s0
lrwxrwxrwx   1 root     root          39 Nov 27 12:59 /dev/did/rdsk/d6s0 ->