Use bpf2go in dumpframes example (#8)

* fix build error

* add xdp program via bpf2go to dumpframes example that can filter on the ip protocol number

* support ipv6

* fix comment

* move h_proto declaration to single line

* fix indentation

* use [email protected]

* use cillium/[email protected]

Revise kernel kick and Poll code #6

Remove memory allocations on Rx/Tx paths #5

allow socket option configuration (#4)

Add signal handler by @glaslos to the minimal usage example in godoc

Merge pull request #2 from glaslos/gofmt_gomod

go module and gofmt and lint warnings