func (d *Daemon) allocateIPs(ep *endpoint.Endpoint) error { allocateIP := func(ep *endpoint.Endpoint, ipamReq ipam.IPAMReq) (resp *ipam.IPAMRep, err error) { if ep.IsCNI() { resp, err = d.AllocateIP(ipam.CNIIPAMType, ipamReq) } else if ep.IsLibnetwork() { resp, err = d.AllocateIP(ipam.LibnetworkIPAMType, ipamReq) } return } releaseIP := func(ep *endpoint.Endpoint, ipamReq ipam.IPAMReq) (err error) { if ep.IsCNI() { err = d.ReleaseIP(ipam.CNIIPAMType, ipamReq) } else if ep.IsLibnetwork() { err = d.ReleaseIP(ipam.LibnetworkIPAMType, ipamReq) } return } _, err := allocateIP(ep, ep.IPv6.IPAMReq()) if err != nil { // TODO if allocation failed reallocate a new IP address and setup veth // pair accordingly return fmt.Errorf("unable to reallocate IPv6 address: %s", err) } else { log.Infof("EP %d's IPv6 successfully reallocated", ep.ID) } defer func(ep *endpoint.Endpoint) { if err != nil { releaseIP(ep, ep.IPv6.IPAMReq()) } }(ep) if d.conf.IPv4Enabled { if ep.IPv4 != nil { _, err := allocateIP(ep, ep.IPv4.IPAMReq()) if err != nil { return fmt.Errorf("unable to reallocate IPv4 address: %s", err) } else { log.Infof("EP %d's IPv4 successfully reallocated", ep.ID) } } } return nil }