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Re: IPv6 default route flapping

Greg Troxel <> wrote:

> Besides -v, tcpdump prints timestamps and those were omitted.   Also the
> lines were miswrapped making them very hard to read.

You can grab a pcap file from here:

That's "tcpdump -w ipv6.pcap ip6" while running "ping6".

> It looks like there are neighbor solicitations and I am not seeing the
> replies.
> Are you really sure you aren't blocking ND replies in a firewall?   Also
> add to your time history the packets that were blocked, with timestamps.

The Security Group has no restrictions and allows any
and all traffic.

None of the other OS instances on the same VPC are
seeing this problem.  I've tried FreeBSd, Ubuntu,
CentOS and OmniOS; if it was a network issue, I'd
expect other OS instances to similarly see such


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