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ntopng showing no IPv6 traffic flows/IPs/etc using IPFIX #1906
I've recently spun up IPv6 connectivity on one of my subnets at home through a tunnel broker, and wished to use nprobe/ntopng to dig into traffic flows and learn some things. I set up a flow exporter on my firewall/router to send traffic to an nprobe collector on another internal host, be viewed via ntopng. The problem is, nowhere in the ntopng UI does it show any IPv6 flows/traffic. Every IP/flow/etc is IPv4. I must be missing something in my configuration....
OpenBSD 6.3 is exporting data (as my firewall/router):
nprobe on flow1 host:
ntopng on flow1 host config:
We use a conservative approach and leave the default templates as small as possible, to avoid exporting fields default users don't care about. This is not a loss in generality as templates are fully customizable and any advanced user can tailor them to fit his/her needs.
In the case of IPFIX the default template is IPv4 only and contains the following fields and this explains why you were not seeing IPv6: