Hi, I have been in a recent discussion about what the correct IP address to use for an upcall from the kernel to the NFS daemon nfsuserd (which maps between uids<->usernames and gids<->group names).
The code uses UDP for the upcall (I once committed a patch changing that to an AF_LOCAL socket, but it broke certain sites where the directory the socket was being created in was NFS mounted). Currently the code uses a hardwired "127.0.0.1". Rodney Grimes feels that it would be better to do a name lookup on "localhost" to get the address to use. In this case, I am concerned that the daemon will not be able to start up under conditions where the DNS service isn't yet functional. (This problem can mostly be avoided by specifying "localhost" in /etc/hosts and configuring the system to use that file before DNS, but I still don't like having this dependency on DNS for the daemon starting up.) Note that the upcall will work for any IP# that refers to the local machine and it does not need to be the one specified for "localhost" in the DNS. So, do you think I should do a lookup for "localhost" at daemon startup or use a hardwired "127.0.0.1/::1"? Thanks in advance for any comments, rick _______________________________________________ freebsd-net@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
