Cause

During boot strap of a SunOS 2.5.2 system, nfsd(1M) displays the following:

netdir_getbyname (transport tcp, host/serv \1/nfs), No such file or directory Cannot establish NFS service over /dev/tcp: transport setup problem.

The problem: The NIS maps have been populated from older systems, and the nfs/tcp entry of the services map is missing. (The user is running NIS+, but this problem can also occur with NIS.)