RFC 1207:FYI on Questions and Answers: Answers...
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UDP


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... IBM NSMAIN nameserver running in cache mode (UDP queries do not cause this problem, though it is usually a UDP ...
... UDP queries do not cause this problem, though it is usually a UDP resolution that is active upon the crash -- this resolution ...


... SunOS 3.5 turns the UDP checksum off, which is legal and works okay over interfaces such as ethernet ...
... thus running NFS over SLIP requires you to turn the UDP checksum on. Otherwise, you'll experience erratic behavior such as the one described above. ...



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