Do not shut down peer immediately after sending pex addrs in SeedMode

CHANGELOG.md

@@ -139,8 +139,8 @@ increasing attention to backwards compatibility. Thanks for bearing with us!
 - [node] [\#2434](https://github.com/tendermint/tendermint/issues/2434) Make node respond to signal interrupts while sleeping for genesis time
 - [state] [\#2616](https://github.com/tendermint/tendermint/issues/2616) Pass nil to NewValidatorSet() when genesis file's Validators field is nil
 - [p2p] [\#2555](https://github.com/tendermint/tendermint/issues/2555) Fix p2p switch FlushThrottle value (@goolAdapter)
-- [p2p] [\#2668](https://github.com/tendermint/tendermint/issues/2668) Reconnect to originally dialed address (not self-reported
-  address) for persistent peers
+- [p2p] [\#2668](https://github.com/tendermint/tendermint/issues/2668) Reconnect to originally dialed address (not self-reported address) for persistent peers
+- [p2p] [\#2797](https://github.com/tendermint/tendermint/pull/2797) AddressBook requires addresses to have IDs; Do not crap out immediately after sending pex addrs in seed mode
 
 
 ## v0.25.0

p2p/pex/pex_reactor.go

@@ -221,6 +221,7 @@ func (r *PEXReactor) Receive(chID byte, src Peer, msgBytes []byte) {
 		// 2) limit the output size
 		if r.config.SeedMode {
 			r.SendAddrs(src, r.book.GetSelectionWithBias(biasToSelectNewPeers))
+			time.Sleep(time.Second * 3) // TODO Rethink this.  Without it, above may not actually send.
 			r.Switch.StopPeerGracefully(src)
 		} else {
 			r.SendAddrs(src, r.book.GetSelection())