Why does my IPv6 over PPP stop working?

Oct 10, 2015
My IPv6 works great after the first router advertisement... When it comes time for radvd to second a second router advertisement it dies and the route disappears from my routing table. In short, IPv6 works great for about 100 seconds and then it dies. I can't figure out why.I'm trying to setup IPv6 over IPv4 PPTPD. The entire /64 is dedicated to the single PPP interface. Any idea why it's not working? Thanks!
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