Category: bogons

Strange IPv6 bogon Announcements

Posted by Andree Toonk - June 11, 2010 - bogons, IPv6
0

This Friday a number of BGPmon.net users have received an alert message informing them that their AS was announcing a new IPv6 prefix. I too got an alert email and was surprised to when I saw the prefix that was detected, as the prefix detected was an ‘invalid’ IPv6 prefix. This is the message I [...]

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Issues with allocating from 1.0.0.0/8

Posted by Andree Toonk - January 24, 2010 - bogons
7

This week it was announced that IANA has allocated 1.0.0.0/8 to APNIC. This prefix must look familiar to many as we see it often in examples and documentation. And let’s be honest haven’t you used 1.1.1.1 on one of your test routers to quickly test something? Receiving a prefix from this range might result in [...]

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BGPmon now has full IPv6 support!

Posted by Andree Toonk - November 25, 2008 - BGPmon.net, bogons, Hijack, IPv6
2

I am happy to announce that BGPmon now has full IPv6 support! This means that you can now monitor your IPv6 prefixes just as you are monitoring your IPv4 prefixes. All the codes, alarm messages etc are they same as for IPv4. It took a while because I had to write a few new libraries [...]

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IPv6 bogons

Posted by Andree Toonk - November 2, 2008 - bogons, IPv6
2

BGPmon is gradually being extended with IPv6 support, the newest IPv6 feature is IPv6 bogon detection comparable to the already existing IPv4 bogon detection page. IPv6 bogons are defined as IPv6 prefixes which are not allocated by the RIRs.  All IPv6 bgp updates are compared to a list of known valid prefixes. If the update [...]

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Interesting IPv6 prefix

Posted by Andree Toonk - October 12, 2008 - BGPmon.net, bogons, IPv6
0

As you probably already found out, BGPmon tries to detect IPv4 bogon announcement and publishes them on the BGPmon.net website. For this I am using the list published by team cymru (great resource!). Quite some bogons are detected every day, although most of them are “just” RFC1918 space.  And luckily most of them don’t seem [...]

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