Does `sys/net/radix.c` support non-contiguous masks?

[Lev Serebryakov]

 I'm trying to use `sys/net/radix.c` to store flow data (proto + src
ip/port + dst ip/port) with non-contiguous masks (like "TCP from any
address/port to 192.168.134.1"). I've written very simple prototype
userland code [1] but it hangs in infinite loop on addition of second
node (!).

 Is it supported?

 Could somebody look at code and say, what do I do wrong?

 `radix.c` API is not very well-documented…

[1] https://gist.github.com/blacklion/072537283e91d39638438c9456b29292

-- 
// Lev Serebryakov

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