Unsolicited join requests

Unsolicited join requests
Unsolicited report
for 224.2.127.254
Unsolicited report
for 224.2.145.155
t = 0 : Membership query sent
t = 0 : No reports sent by a or b
t = 24 : B sent a report to r1 for 224.2.145.155
t = 52 : A sent a report to r1 for 224.2.127.254