cc64a2bf11
_yp_dobind() checks to see if a fork() happens (by checking PIDs) and invalidates all bindings if it finds itself in a newly created child process. (This avoids sharing RPC client handles and socket descriptors with the parent, which would be bad.) Unfortunately, it summarily calls clnt_destroy() on the handles, which may result in the destruction of a descriptor that isn't really a socket. This is fixed by replacing the explicit call to clnt_destroy() with a call to _yp_unbind(), which deals with potentially hosed socket descriptors an a safe manner. This is basically a one-liner. Once I confirm that it fixes Christoph's problem, I'd like permission to put it in the 2.2-RELENG branch.