Still me, I just redo a test and here are the multicast logs
[03-15-18 10:24:37 am] | Task (15) Multi-Cast Task is new!
[03-15-18 10:24:37 am] | Task (15) /images/SalleC11-01 image file found.
[03-15-18 10:24:37 am] | Task (15) Multi-Cast Task 2 clients found.
[03-15-18 10:24:37 am] | Task (15) Multi-Cast Task sending on base port: 54210.
[03-15-18 10:24:37 am] | Command: /usr/local/sbin/udp-sender --interface eth0 --min-receivers 2 --max-wait 600 --portbase 54210 --full-duplex --ttl 32 --nokbd --nopointopoint --file /images/SalleC11-01/d1p1.img;/usr/local/sbin/udp-sender --interface eth0 --min-receivers 2 --max-wait 10 --portbase 54210 --full-duplex --ttl 32 --nokbd --nopointopoint --file /images/SalleC11-01/d1p2.img;/usr/local/sbin/udp-sender --interface eth0 --min-receivers 2 --max-wait 10 --portbase 54210 --full-duplex --ttl 32 --nokbd --nopointopoint --file /images/SalleC11-01/d1p3.img;/usr/local/sbin/udp-sender --interface eth0 --min-receivers 2 --max-wait 10 --portbase 54210 --full-duplex --ttl 32 --nokbd --nopointopoint --file /images/SalleC11-01/d1p4.img;
[03-15-18 10:24:37 am] | Task (15) Multi-Cast Task has started!
[03-15-18 10:24:47 am] | Task (15) Multi-Cast Task is already running with pid: 43102.
[03-15-18 10:24:57 am] | Task (15) Multi-Cast Task is already running with pid: 43102.
[03-15-18 10:25:07 am] | Task (15) Multi-Cast Task is already running with pid: 43102.
[03-15-18 10:25:17 am] | Task (15) Multi-Cast Task is already running with pid: 43102.
[03-15-18 10:25:27 am] | Task (15) Multi-Cast Task is already running with pid: 43102.
[03-15-18 10:25:37 am] | Task (15) Multi-Cast Task is already running with pid: 43102.
[03-15-18 10:25:47 am] | Task (15) Multi-Cast Task is already running with pid: 43102.
[03-15-18 10:25:57 am] | Task (15) Multi-Cast Task is already running with pid: 43102.
[03-15-18 10:26:07 am] | Task (15) Multi-Cast Task is already running with pid: 43102.
[03-15-18 10:26:17 am] | Task (15) Multi-Cast Task is already running with pid: 43102.
[03-15-18 10:26:27 am] | Task (15) Multi-Cast Task is already running with pid: 43102.