[dns-operations] porttest.dns-oarc.net: check your resolver's source port behavior

Duane Wessels wessels at dns-oarc.net
Wed Jul 9 18:57:46 UTC 2008

I've put together a quick hack that you can use to check your
resolver's source port characteristics.  Use 'dig' to send a query
to porttest.dns-oarc.net:

    $ dig +short porttest.dns-oarc.net TXT

You should get back some output like this:

    "xxx.xxx.xxx.xxx is FAIR: 26 queries in 0.1 seconds from 25 ports with std dev 3843.00"

Duane W.

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