@@ -20,12 +20,18 @@ import (

 	"github.com/moby/buildkit/control"

 	"github.com/moby/buildkit/identity"

 	"github.com/moby/buildkit/session"

+	"github.com/moby/buildkit/solver/llbsolver"

+	"github.com/moby/buildkit/util/entitlements"

 	"github.com/moby/buildkit/util/tracing"

 	"github.com/pkg/errors"

 	"golang.org/x/sync/errgroup"

 	grpcmetadata "google.golang.org/grpc/metadata"

 )

+func init() {

+	llbsolver.AllowNetworkHostUnstable = true

+}

+

 // Opt is option struct required for creating the builder

 type Opt struct {

 	SessionManager    *session.Manager

@@ -230,6 +236,14 @@ func (b *Builder) Build(ctx context.Context, opt backend.BuildConfig) (*builder.

 		frontendAttrs["platform"] = opt.Options.Platform

 	}

+	switch opt.Options.NetworkMode {

+	case "host", "none":

+		frontendAttrs["force-network-mode"] = opt.Options.NetworkMode

+	case "", "default":

+	default:

+		return nil, errors.Errorf("network mode %q not supported by buildkit", opt.Options.NetworkMode)

+	}

+

 	exporterAttrs := map[string]string{}

 	if len(opt.Options.Tags) > 0 {

@@ -245,6 +259,10 @@ func (b *Builder) Build(ctx context.Context, opt backend.BuildConfig) (*builder.

 		Session:       opt.Options.SessionID,

 	}

+	if opt.Options.NetworkMode == "host" {

+		req.Entitlements = append(req.Entitlements, entitlements.EntitlementNetworkHost)

+	}

+

 	aux := streamformatter.AuxFormatter{Writer: opt.ProgressWriter.Output}

 	eg, ctx := errgroup.WithContext(ctx)