RP/0/RP0/CPU0:R6#ping 4.4.4.4 source 6.6.6.6 count 20 timeout 1
Sun Oct  4 15:33:40.832 UTC
Type escape sequence to abort.
Sending 20, 100-byte ICMP Echos to 4.4.4.4 timeout is 1 seconds:
....................
Success rate is 0 percent (0/20)
RP/0/RP0/CPU0:R6#traceroute 4.4.4.4 source 6.6.6.6 timeout 1 probe 2 maxttl 5
Sun Oct  4 15:34:01.984 UTC

Type escape sequence to abort.
Tracing the route to 4.4.4.4

 1  6.6.6.6 !N  *