diff --git a/doc/bird.sgml b/doc/bird.sgml index f991bad0..07e75588 100644 --- a/doc/bird.sgml +++ b/doc/bird.sgml @@ -1378,6 +1378,11 @@ RFC 5882. development, expect some rough edges and possible UI and configuration changes in the future. Also note that we currently support at most one protocol instance. +

BFD packets are sent with a dynamic source port number. Linux systems use by +default a bit different dynamic port range than the IANA approved one +(49152-65535). If you experience problems with compatibility, please adjust +/proc/sys/net/ipv4/ip_local_port_range + Configuration

BFD configuration consists mainly of multiple definitions of interfaces.