skip_if_ipkts:

number of packets received by interface 

skip_if_opkts:

number of packets sent by interface 

skip_if_encrypts:

number of packets encrypted 

skip_if_decrypts:

number of packets decrypted 

skip_if_drops:

number of packets dropped 

skip_if_notv4:

number of non-IPv4 packets 

skip_if_bypasses:

number of certificate packets 

skip_if_raw_in:

number of raw packets received 

skip_if_raw_out:

number of raw packets sent