func (v *validator) validateGateway(idx int, gateway string, ipNet maybeIPNet) []error {
if v.isBlank(gateway) {
return []error{bosherr.Errorf("networks[%d].subnets[0].gateway must be provided", idx)}
} else {
errors := []error{}
ipNet.Try(func(ipNet *net.IPNet) error {
gatewayIp := net.ParseIP(gateway)
if gatewayIp == nil {
errors = append(errors, bosherr.Errorf("networks[%d].subnets[0].gateway must be an ip", idx))
}
if !ipNet.Contains(gatewayIp) {
errors = append(errors, bosherr.Errorf("subnet gateway '%s' must be within the specified range '%s'", gateway, ipNet))
}
if ipNet.IP.Equal(gatewayIp) {
errors = append(errors, bosherr.Errorf("subnet gateway can't be the network address '%s'", gatewayIp))
}
if binet.LastAddress(ipNet).Equal(gatewayIp) {
errors = append(errors, bosherr.Errorf("subnet gateway can't be the broadcast address '%s'", gatewayIp))
}
return nil
})
return errors
}
}
package net_test
import (
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"net"
binet "github.com/cloudfoundry/bosh-init/common/net"
)
var _ = Describe("common.net ip helpers", func() {
Describe("LastAddress", func() {
It("Returns the last address in the network range", func() {
Expect(
binet.LastAddress(netFor("10.0.0.0/24")),
).To(Equal(net.ParseIP("10.0.0.255")))
Expect(
binet.LastAddress(netFor("10.0.0.20/24")),
).To(Equal(net.ParseIP("10.0.0.255")))
Expect(
binet.LastAddress(netFor("10.1.0.0/24")),
).To(Equal(net.ParseIP("10.1.0.255")))
Expect(
binet.LastAddress(netFor("10.10.0.0/8")),
).To(Equal(net.ParseIP("10.255.255.255")))
Expect(
binet.LastAddress(netFor("2001:db8:1234::/48")),