--------
In message <[email protected]>, Hal Mu
rray writes:
>
>> The CRC is there to detect when DNS replies are rewritten to point
>> everything at captive portals, as is the case on a lot of "free WIFI"
>> networks etc. 
>
>What do "free WIFI" portals do with TXT records?

A fair number of them seem to return "A $MYGW" for *any* DNS query.

>What do they do with NTP requests?

They generally seem to allow NTP through once you're logged in.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
[email protected]         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
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