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Initial ipv6 / iptables work

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This commit is contained in:
Justin SB
2014-11-03 08:04:42 -08:00
parent 808be2d13b
commit 9a053a4b59
5 changed files with 77 additions and 22 deletions
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14
pkg/proxy/proxier.go
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@@ -529,8 +529,11 @@ func iptablesFlush(ipt iptables.Interface) error {
}
// Used below.
var zeroIP = net.ParseIP("0.0.0.0")
var localhostIP = net.ParseIP("127.0.0.1")
var zeroIPv4 = net.ParseIP("0.0.0.0")
var localhostIPv4 = net.ParseIP("127.0.0.1")
var zeroIPv6 = net.ParseIP("::0")
var localhostIPv6 = net.ParseIP("::1")
// Build a slice of iptables args for a portal rule.
func iptablesPortalArgs(destIP net.IP, destPort int, proxyIP net.IP, proxyPort int, service string) []string {
@@ -558,10 +561,13 @@ func iptablesPortalArgs(destIP net.IP, destPort int, proxyIP net.IP, proxyPort i
// Unfortunately, I don't know of any way to listen on some (N > 1)
// interfaces but not ALL interfaces, short of doing it manually, and
// this is simpler than that.
if proxyIP.Equal(zeroIP) || proxyIP.Equal(localhostIP) {
if proxyIP.Equal(zeroIPv4) || proxyIP.Equal(zeroIPv6) ||
proxyIP.Equal(localhostIPv4) || proxyIP.Equal(localhostIPv6) {
// TODO: Can we REDIRECT with IPv6?
args = append(args, "-j", "REDIRECT", "--to-ports", fmt.Sprintf("%d", proxyPort))
} else {
args = append(args, "-j", "DNAT", "--to-destination", fmt.Sprintf("%s:%d", proxyIP.String(), proxyPort))
// TODO: Can we DNAT with IPv6?
args = append(args, "-j", "DNAT", "--to-destination", net.JoinHostPort(proxyIP.String(), strconv.Itoa(proxyPort)))
}
return args
}