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From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.4.1) Gecko/20020508 Netscape6/6.2.3 Description of problem: 7.2's rpc.mountd allowed the use of IP address ranges in /etc/exports and did the hostname lookup when the client requested a mount. 7.3's rpc.mountd will not allow the mount unless the hostname is listed in /etc/exports. Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1.setup 7.3 system with exported NFS filesystems, use an IP address range (e.g. 192.168.1.*) in the /etc/exports file. 2. attempt to mount the filesystem from a 7.3 client using IP address. hostname of client is in /etc/hosts file of server. Actual Results: May 27 13:24:04 stevewa rpc.mountd: refused mount request from pent3 for /home (/): no export entry Expected Results: filesystem should have mounted Additional info:
This is what the man page for exports says: IP networks You can also export directories to all hosts on an IP (sub‐) network simultaneously. This is done by specifying an IP address and netmask pair as address/netmask where the netmask can be specified in dotted‐decimal format, or as a contiguous mask length (for example, either /255.255.252.0 or /22 appended to the network base address result in identical subnetworks with 10 bits of host). Wildcard characters generally do not work on IP addresses, though they may work by accident when reverse DNS lookups fail.
If that makes you feel better, I have setup a box to reproduce it before I turned to RTFM.