jonathan@DSG.Stanford.EDU said:
> 3.  ip_output() enqueues packet on lo0, which immediately routes the
> packet back up
>     the networking stack, complete with tags. 
> [...]
> Conclusion: I should commit the change to icmp_reflect() to strip all
> packet tags

Forgive my ignorance, but what would be wrong with stripping all tags
in the loopback driver? After all, a real interface transfers just the
packet without tags, and why should lo0 behave differently than, lets
say, an external loopback?

best regards
Matthias