I have no idea why its doing that...
4294967293 = your Cluster Vserver-ID
the IP seems to be all Cluster interconnect private IP (so no major reason for concern)
seems like its just sending 5 ICMP packets to each cluster lif.
here is a sample output of the command..
% /sbin/vcontext -v 4294967293 /sbin/ping -i0.2 -n -c5 -S169.254.153.190 169.254.224.190
PING 169.254.224.190 (169.254.224.190) from 169.254.153.190: 56 data bytes
64 bytes from 169.254.224.190: icmp_seq=0 ttl=255 time=0.123 ms
64 bytes from 169.254.224.190: icmp_seq=1 ttl=255 time=0.110 ms
64 bytes from 169.254.224.190: icmp_seq=2 ttl=255 time=0.142 ms
64 bytes from 169.254.224.190: icmp_seq=3 ttl=255 time=0.130 ms
64 bytes from 169.254.224.190: icmp_seq=4 ttl=255 time=0.109 ms
--- 169.254.224.190 ping statistics ---
5 packets transmitted, 5 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 0.109/0.123/0.142/0.012 ms