« on: February 21, 2017, 04:34:41 PM »
The best place to run something like this is via whatever scripts may also run when your IPv4 address changes. If you run the query too frequently, you may get blocked for abuse.
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That was it! They unblocked ICMP and I was able to update my IPv4 address on the tunnel broker. For the record, "good 127.0.0.1" is a bad result, it should read your IPv4 address. Maybe it should say bad instead of good?
This answer indicates good update only when 127.0.0.1 address is requested by update. In all other cases it warns user that request was ignored because of agent that does not follow our specifications.