wrong byte counters

[1001001]

Running 26.7.1_1 and trying to figure out how many bytes are received per protocol (ipv4/ipv6) on my wan interface (igc0):

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netstat -nib -I igc0 --libxo json | jq '{ \
  total: ([.statistics.interface[] | select(.network | startswith("<Link")) | ."received-bytes"][0] // 0), \
  ipv4: ([.statistics.interface[] | select(.network | test("^[0-9]+\\.")) | ."received-bytes"] | add // 0), \
  ipv6: ([.statistics.interface[] | select(.network | contains(":")) | ."received-bytes"] | add // 0) \
}'
results in

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{
  "total": 23410011429,
  "ipv4": 23001947,
  "ipv6": 17767223
}
The total counter is correct, but not the v4/v6 counters, they are much to low!
Am I doing something wrong or a bug?

[pfry]

Offhand I'd guess that the protocol-specific counters are "terminated on device" rather than "forwarded". The statistics do not appear to be clearly defined (from a quick scan of the docs).

[1001001]

Hm good point.
Any idea how to get protocol specific in/out counters?
Like /proc/self/net/dev_snmp6/eth0 on linux.

[pfry]

Have you dug into the FreeBSD proc filesystem ("mount -t procfs proc /proc")? I haven't looked in there in a while... never can tell. Would session/rule counters give you what you want?