+Version 1.6.4 (2018-03-22)
+ o Basic VRF support
+ o Simplified autoconf scripts
+ o BGP: Shutdown communication (RFC 8203)
+ o BGP: Allow exchanging LOCAL_PREF with eBGP peers
+ o BGP: Allow to specify interface for regular sessions
+ o BGP: New option 'disable after cease'
+ o RAdv: Support for more specific routes (RFC 4191)
+ o RAdv: Proper handling of prefix retraction
+ o Filter: Allow silent filter execution
+ o Filter: Fixed stack overflow in BGP mask expressions.
+ o Several bug fixes
+
+Version 1.6.3 (2016-12-21)
+ o Large BGP communities
+ o BFD authentication (MD5, SHA1)
+ o SHA1 and SHA2 authentication for RIP and OSPF
+ o Improved documentation
+ o Several bug fixes
+
+Version 1.6.2 (2016-09-29)
+ o Fixes serious bug introduced in the previous version
+
+Version 1.6.1 (2016-09-22)
+ o Support for IPv6 ECMP
+ o Better handling of IPv6 tentative addresses
+ o Several updates and fixes in Babel protocol
+ o Filter: New !~ operator
+ o Filter: ASN ranges in bgpmask
+ o KRT: New kernel protocol option 'metric'
+ o KRT: New route attribute 'krt_scope'
+ o Improved BIRD help messages
+ o Fixes memory leak in BGP multipath
+ o Fixes handling of empty path segments in BGP AS_PATH
+ o Several bug fixes
+
+Version 1.6.0 (2016-04-29)
+ o Major RIP protocol redesign
+ o New Babel routing protocol
+ o BGP multipath support
+ o KRT: Add support for plenty of kernel route metrics
+ o KRT: Allow more than 256 routing tables
+ o Static: Allow to specify attributes for static routes
+ o Static: Support for BFD controlled static routes
+ o FreeBSD: Setup password for BGP MD5 authentication
+ o IO: Remove socket number limit
+ o Plenty of bug fixes
+
+ Upgrade notes:
+
+ For RIP, most protocol options were moved to interface blocks.
+
+
Version 1.5.0 (2015-04-20)
o Major OSPF protocol redesign.
o OSPFv2 multi-instance extension (RFC 6549).