Where is the flaw?

Was this ipv6 "feature" really deserving of a headline "Experts scramble to quash IPv6 flaw".

I may have misunderstood, but is the only problem that malicious packets could containing cycles?

I'm a little surprised that the ipv6 spec wouldn't mention this. Non the less here is an obvious fix: have routers short circuit the cycles, or even reject those packets all together.

Source routing is one solution to a real accessibility problem for mobile users. Otherwise mobile users would annoyingly loose IPs while traveling across multiple subnets.

Another solution is to use proxies for mobile users, however proxied traffic multiplies user's bandwidth footprint and increases packet latency. Not to mention expense of maintaining proxy servers.

Someone shed some light please why this is a "flaw"?