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put setcap command in README

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Cameron Sparr 2016-02-03 11:39:07 -07:00
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README.md
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@ -70,7 +70,12 @@ sudo sysctl -w net.ipv4.ping_group_range="0 2147483647"
```
If you do not wish to do this, you can set `pinger.SetPrivileged(true)` and
run as super-user.
use setcap to allow your binary using go-ping to bind to raw sockets
(or just run as super-user):
```
setcap cap_net_raw=+ep /bin/goping-binary
```
See [this blog](https://sturmflut.github.io/linux/ubuntu/2015/01/17/unprivileged-icmp-sockets-on-linux/)
and [the Go icmp library](https://godoc.org/golang.org/x/net/icmp) for more details.