[j-nsp] MX ping - ToS overrided

[Arash Alizadeh]

Hi,
 
I'm experiencing issues when initating ToS ping from MX devices. The specified ToS argument just seems to be overrided to dec 192 when leaving the interface.
 
I verified this with the traffic monitor on the egress interface:
 
user at node> ping 8.8.8.8 tos 96 
64 bytes from 8.8.8.8: icmp_seq=0 ttl=246 time=15.675 ms
64 bytes from 8.8.8.8: icmp_seq=1 ttl=246 time=15.385 ms
 
user at node> monitor traffic interface xe-0/0/0.0 extensive matching icmp 
PFE proto 2 (ipv4): (tos 0xc0, ttl 255, id 16332, offset 0, flags [none], proto: ICMP (1), length: 84) x.x.x.x > 8.8.8.8: ICMP echo reply, id 47826, seq 0, length 64
14:06:58.721197 Out 
 
I've tried this on 11.4R6.6 and 12.3R4-S2 (ppc and 64-bit) boxes with the same result.
 
Did anyone else ran into this issue? 
Any input is appriciated. 
 
Regards,
Arash