It seems as though I'm victim to an incrementing IPV4_SANITY_ADDR_CHK_FAILURES 
counter on one of my ASR9ks.

The only explanation I can find for that counter is:

"IPV4_SANITY_ADDR_CHK_FAILURES  Ingress IPV4 address martian check failure 
127.0.0.0/8 224.0.0.0/8, not 224.0.0.0/4 (225.0.0.0/8 and 239.0.0.0/8 don't 
increment error  count)   When source address is below, ASR9K forward the 
packet without any error. 0.0.0.0/8 10.0.0.0/8 128.0.0.0/16 169.254.0.0/16 
172.16.0.0/12 191.255.0.0/16 192.0.0.0/24 223.255.255.0/24 240.0.0.0/4"

I'm just a little confused by that explanation.  Does anyone else get that the 
only IPs that trigger that counter are within 127.0.0.0/8 and 224.0.0.0/8, or 
am I missing something?


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