it's undocumented, the other router implementations don't do it,
and unnecessary since we store addresses in a List, not a Set,
as of 0.8.14 2012-05

From github PR #22
https://github.com/str4d/ed25519-java/commit/747df9f9aa407ba90d34f498c5eab6f304fdd58a

Ensure blocklist is initialized before netdb

 - Verify source address and port
 - Add to command line
 - main() test improvements
 - Add KoD support (ticket #1896)
 - Add initial IPv6 support (ticket #1897)
 - Make some methods private
 - Add year 2036 warning

            to branch 'i2p.i2p' (head 763f037865b6bc798d2db144dc39faa02a09219a)

- Fix jetty version in build.xml
- Make javadoc package priority 'extra'
- Beginning of xenial files, Java 8 only, untested
- Build doc updates
- Add zesty, remove wily in docs