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Hairpin NAT network configuration 

Offer the ability to enable hairpin NAT on a per network basis, while
keeping it disable by default as it is unsupported by older kernel.

Signed-off-by: Arnaud Porterie <arnaud.porterie@docker.com>
This commit is contained in:
Arnaud Porterie 2015-03-11 13:42:37 -07:00
parent ef4efd065c
commit e1c14b3ca2
2 changed files with 11 additions and 0 deletions
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6
configs/network.go
View File

@ -42,6 +42,12 @@ type Network struct {
// HostInterfaceName is a unique name of a veth pair that resides on in the host interface of the
// container.
HostInterfaceName string `json:"host_interface_name"`
// HairpinMode specifies if hairpin NAT should be enabled on the virtual interface
// bridge port in the case of type veth
// Note: This is unsupported on some systems.
// Note: This does not apply to loopback interfaces.
HairpinMode bool `json:"hairpin_mode"`
}
// Routes can be specified to create entries in the route table as the container is started

5
network_linux.go
View File

@ -135,6 +135,11 @@ func (v *veth) create(n *network, nspid int) (err error) {
if err := netlink.NetworkSetMTU(host, n.Mtu); err != nil {
return err
}
if n.HairpinMode {
if err := netlink.SetHairpinMode(host, true); err != nil {
return err
}
}
if err := netlink.NetworkLinkUp(host); err != nil {
return err
}