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Get dhcp lease only for ipv4

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This commit is contained in:
niusmallnan 2018-01-20 09:27:50 +08:00
parent 7250ee8ab4
commit b5dd1d3f1c
1 changed files with 5 additions and 4 deletions
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9
netconf/netconf_linux.go
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@ -256,20 +256,21 @@ func getDhcpLease(iface string) (lease map[string]string) {
}
func getDhcpLeaseString(iface string) []byte {
cmd := exec.Command("dhcpcd", "-U", iface)
args := defaultDhcpArgs
args = append(args, "-U", iface)
cmd := exec.Command(args[0], args[1:]...)
//cmd.Stderr = os.Stderr
out, err := cmd.Output()
log.Debugf("Running dhcpcd -U %s, output: %s", iface, string(out))
log.Debugf("Running cmd: %s, output: %s", args, string(out))
if err != nil {
// dhcpcd works fine, but gets an error: exit status 1
log.Warnf("Got error with dhcpcd -U %s: %v", iface, err)
log.Warnf("Failed to run cmd: %s, error: %v", args, err)
}
return out
}
func hasDhcp(iface string) bool {
out := getDhcpLeaseString(iface)
log.Debugf("dhcpcd -U %s: %s", iface, out)
return len(out) > 0
}