- [client] Added '-P udpraw' to allow the client to send SPA packets over UDP with a spoofed source IP address. This is in addition to the original 'tcpraw' and 'icmp' protocols that also support a spoofed source IP. - [server] Bug fix to accept SPA packets over ICMP if the fwknop client is executed with '-P icmp' and the user has the required privileges.