[AusNOG] (Probably a bit OT) IPv6 oddity

Karl Auer kauer at biplane.com.au
Tue Oct 15 15:05:31 EST 2019


Had an interesting (to me) case last week. Client rang on his mobile to
say his phones didn't work and also he couldn't get to his bank or
anything else - except Google. Also, I found I was able to use
TeamViewer to access one of his PCs.

He's on NBN over FTTC (or maybe FTTN) with Telstra.

Turned out his Telstra router was supplying a valid prefix to
autoconfigure IPv6 addresses in, but it was not supplying IPv4
addresses via DHCP. Reset the router and it all came good.

This is the first time I've seen this in the wild where it was not a
misconfiguration (though I'm the first to admit that "the wild" is more
of an inoffensive thicket in my case). Is it more common than I think?

Regards, K.

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Karl Auer (kauer at biplane.com.au)
http://www.biplane.com.au/kauer
http://twitter.com/kauer389

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