noticed by Alex Holst
OK henning@

OK phessler@

OK phessler@

filters (AS, peer-as, source-as, transit-as).
Add a use case (block illegal AS numbers) to the bgpd.conf example.
feedback from claudio, sthen, florian,
ok florian@ phessler@

**smaller than /24 allocations**.  Our default ruleset will not allow
those, even though they will be for various pieces of critical dual-stack
infrastructure to help IPv6-only systems survive.
This adds a default rule to allow those blocks.  With it, I see the
RIPE announced test blocks on our AMS-IX peers.
ARIN announced this block and policy at, enjoy
https://www.arin.net/announcements/2014/20140130.html
OK benno@, claudio@, sthen@, florian@

ok sthen florian

routable. See RFC6666. Diff by Gleydson Soares.

input reyk@, guenther@
"move fast" deraadt@
OK naddy@

default, similar to the v6 entries.
While here, add a filter for 100.64.0.0/10, which is now reserved by RFC 6598
OK henning@, sthen@

non-routeable prefixes. While there sort list.
Diff provided by Andre Keller.

While there extend the current IPv4 filterset.
OK sthen@, henning@

Patrick Lamaiziere, ok henning@

route already so don't add an additional rule for that. Instead add a commented
allow rule. Idea from Mitja Muzenic (mitja at muzenic dot net)

rule needs an explicit "inet" to match on IPv4 addresses only. OK henning@

and some minor tweaks

requested by theo