mark bootstrap peers as protected

node/modules/lp2p/libp2p.go

@@ -4,6 +4,7 @@ import (
 	"crypto/rand"
 	"time"
 
+	"github.com/filecoin-project/lotus/build"
 	"github.com/filecoin-project/lotus/chain/types"
 	"golang.org/x/xerrors"
 
@@ -75,6 +76,15 @@ func ConnectionManager(low, high uint, grace time.Duration, protected []string)
 			cm.Protect(pid, "config-prot")
 		}
 
+		infos, err := build.BuiltinBootstrap()
+		if err != nil {
+			return Libp2pOpts{}, xerrors.Errorf("failed to get bootstrap peers: %w", err)
+		}
+
+		for _, inf := range infos {
+			cm.Protect(inf.ID, "bootstrap")
+		}
+
 		return Libp2pOpts{
 			Opts: []libp2p.Option{libp2p.ConnectionManager(cm)},
 		}, nil