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block Feb 15 08:10:03 LAN 192.168.1.22:1900 239.255.255.250:1900 UDP
Is multicast traffic from SSDP:
http://www.iana.org/assignments/port-numbers http://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.xml http://en.wikipedia.org/wiki/Simple_Service_Discovery_Protocol