ptp4l -i A1 -s -m -l 7 or ptp4l -i A1 -m -l 7
It can not succesully.
Through the netstat -s
Udp:
1318 packets received
0 packets to unknown port received
0 packet receive errors
364 packets sent
0 receive buffer errors
0 send buffer errors
IgnoredMulti: 711
The IgnoredMulti is increased and am3358 can not receive any UDP mulitcast packets base on the PTP.