IPFS private network video load break

#### Version information:
go-ipfs version: 0.4.13-
Repo version: 6
System version: amd64/darwin
Golang version: go1.9.2

#### Type:

Bug

#### Description:

When I use IPFS private network,add mp4 file,bug the video can not play completed,the error show like:
```
16:28:17.183 DEBUG mdns: mdns query complete mdns.go:143
16:28:22.175 DEBUG bitswap: 164 keys in bitswap wantlist workers.go:183
16:28:22.181 DEBUG mdns: starting mdns query mdns.go:130
16:28:22.183 DEBUG mdns: Handling MDNS entry: 192.168.254.1:4013 QmWDUqqGwHGhWWi538P68Tr5nGNHUHNDUM6pvt4vvk9Kk3 mdns.go:152
16:28:22.183 DEBUG mdns: got our own mdns entry, skipping mdns.go:160
16:28:22.183 DEBUG mdns: Handling MDNS entry: 192.168.254.1:4011 QmVQjdsdyyNiNgRusUBgzYURbdUXQjHGocQ6yAq3Wd6FST mdns.go:152
16:28:22.183 DEBUG mdns: Handling MDNS entry: 192.168.254.1:4012 QmYFUMf9RDiLz8JADXFspoz4WsEWGyh3GKMHyKvdnSJPoF mdns.go:152
16:28:22.183 WARNI core: trying peer info: { [/ip4/192.168.254.1/tcp/4011]} core.go:417
16:28:22.183 WARNI core: trying peer info: { [/ip4/192.168.254.1/tcp/4012]} core.go:417
16:28:22.478 DEBUG mdns: Handling MDNS entry: 10.0.1.59:4001 QmXibDf1TMr5obHigdALwy7iq3bTr2JY2RskW6C3aFcZHu mdns.go:152
16:28:22.478 WARNI core: trying peer info: { [/ip4/10.0.1.59/tcp/4001]} core.go:417
16:28:22.478 DEBUG basichost: host %!s(func() peer.ID=0x14d24f0) dialing basic_host.go:479
16:28:22.478 DEBUG swarm2: [] network dialing peer [] swarm_net.go:42
16:28:22.479 DEBUG addrutil: InterfaceAddresses: from manet:[/ip4/127.0.0.1 /ip6/::1 /ip6/fe80::1 /ip6/fe80::1cbc:ff22:b0b3:db18 /ip4/10.0.1.225 /ip6/fe80::52b0:8658:c5b9:325b /ip4/192.168.100.1 /ip4/192.168.254.1] addr.go:220
16:28:22.479 DEBUG addrutil: InterfaceAddresses: usable:[/ip4/127.0.0.1 /ip6/::1 /ip4/10.0.1.225 /ip4/192.168.100.1 /ip4/192.168.254.1] addr.go:232
16:28:22.479 DEBUG addrutil: adding resolved addr:/ip4/0.0.0.0/tcp/4013 /ip4/127.0.0.1/tcp/4013 [/ip4/127.0.0.1/tcp/4013] addr.go:163
16:28:22.479 DEBUG addrutil: adding resolved addr:/ip4/0.0.0.0/tcp/4013 /ip4/10.0.1.225/tcp/4013 [/ip4/127.0.0.1/tcp/4013 /ip4/10.0.1.225/tcp/4013] addr.go:163
16:28:22.479 DEBUG addrutil: adding resolved addr:/ip4/0.0.0.0/tcp/4013 /ip4/192.168.100.1/tcp/4013 [/ip4/127.0.0.1/tcp/4013 /ip4/10.0.1.225/tcp/4013 /ip4/192.168.100.1/tcp/4013] addr.go:163
16:28:22.479 DEBUG addrutil: adding resolved addr:/ip4/0.0.0.0/tcp/4013 /ip4/192.168.254.1/tcp/4013 [/ip4/127.0.0.1/tcp/4013 /ip4/10.0.1.225/tcp/4013 /ip4/192.168.100.1/tcp/4013 /ip4/192.168.254.1/tcp/4013] addr.go:163
16:28:22.479 DEBUG addrutil: adding resolved addr:/ip6/::/tcp/4013 /ip6/::1/tcp/4013 [/ip6/::1/tcp/4013] addr.go:163
16:28:22.480 DEBUG addrutil: ResolveUnspecifiedAddresses:[/p2p-circuit/ipfs/QmWDUqqGwHGhWWi538P68Tr5nGNHUHNDUM6pvt4vvk9Kk3 /ip4/0.0.0.0/tcp/4013 /ip6/::/tcp/4013] [/ip4/127.0.0.1 /ip6/::1 /ip4/10.0.1.225 /ip4/192.168.100.1 /ip4/192.168.254.1] [/p2p-circuit/ipfs/QmWDUqqGwHGhWWi538P68Tr5nGNHUHNDUM6pvt4vvk9Kk3 /ip4/127.0.0.1/tcp/4013 /ip4/10.0.1.225/tcp/4013 /ip4/192.168.100.1/tcp/4013 /ip4/192.168.254.1/tcp/4013 /ip6/::1/tcp/4013] addr.go:208
16:28:22.480 DEBUG swarm2: swarm dialing swarm_dial.go:290
16:28:22.480 DEBUG swarm2: swarm dialing /ip4/10.0.1.59/tcp/4001 swarm_dial.go:350
16:28:27.183 DEBUG mdns: mdns query complete mdns.go:143
16:28:32.176 DEBUG bitswap: 164 keys in bitswap wantlist workers.go:183
16:28:32.181 DEBUG mdns: starting mdns query mdns.go:130
16:28:32.182 DEBUG mdns: Handling MDNS entry: 192.168.254.1:4013 QmWDUqqGwHGhWWi538P68Tr5nGNHUHNDUM6pvt4vvk9Kk3 mdns.go:152
16:28:32.182 DEBUG mdns: got our own mdns entry, skipping mdns.go:160
16:28:32.183 DEBUG mdns: Handling MDNS entry: 192.168.254.1:4012 QmYFUMf9RDiLz8JADXFspoz4WsEWGyh3GKMHyKvdnSJPoF mdns.go:152
16:28:32.183 DEBUG mdns: Handling MDNS entry: 192.168.254.1:4011 QmVQjdsdyyNiNgRusUBgzYURbdUXQjHGocQ6yAq3Wd6FST mdns.go:152
16:28:32.183 WARNI core: trying peer info: { [/ip4/192.168.254.1/tcp/4012]} core.go:417
16:28:32.183 WARNI core: trying peer info: { [/ip4/192.168.254.1/tcp/4011]} core.go:417
16:28:32.235 DEBUG nat: Attempting port map: tcp/4013 nat.go:168
16:28:32.247 DEBUG nat: NAT Mapping: /ip4/0.0.0.0/tcp/4013 --> /ip4/114.84.243.237/tcp/12179 nat.go:207
16:28:32.309 DEBUG mdns: Handling MDNS entry: 10.0.1.59:4001 QmXibDf1TMr5obHigdALwy7iq3bTr2JY2RskW6C3aFcZHu mdns.go:152
16:28:32.309 WARNI core: trying peer info: { [/ip4/10.0.1.59/tcp/4001]} core.go:417
16:28:32.309 DEBUG basichost: host %!s(func() peer.ID=0x14d24f0) dialing basic_host.go:479
16:28:32.309 DEBUG swarm2: [] network dialing peer [] swarm_net.go:42
16:28:32.479 DEBUG swarm2: dial end swarm_dial.go:204
16:28:32.479 WARNI core: Failed to connect to peer found by discovery: dial attempt failed: context deadline exceeded core.go:421
16:28:32.479 WARNI core: Failed to connect to peer found by discovery: dial attempt failed: context deadline exceeded core.go:421
16:28:37.182 DEBUG mdns: mdns query complete mdns.go:143
16:28:38.247 DEBUG dht: handleGetProviders(, QmSZocgTjWQLbtHfvsmUJRBFRgkHdotvmcgMRiKp45aCKR): begin handlers.go:228
16:28:38.248 DEBUG dht: handleGetProviders(, QmSZocgTjWQLbtHfvsmUJRBFRgkHdotvmcgMRiKp45aCKR): have 1 closer peers: [{ [/ip4/127.0.0.1/tcp/4012 /ip4/10.0.1.225/tcp/4012 /ip4/192.168.100.1/tcp/4012 /ip4/192.168.254.1/tcp/4012 /ip6/::1/tcp/4012 /ip4/114.84.243.237/tcp/39881]}] handlers.go:256
16:28:38.248 DEBUG dht: handleGetProviders(, QmSZocgTjWQLbtHfvsmUJRBFRgkHdotvmcgMRiKp45aCKR): end handlers.go:259
16:28:42.175 DEBUG bitswap: 164 keys in bitswap wantlist workers.go:183
16:28:42.181 DEBUG mdns: starting mdns query mdns.go:130
16:28:42.181 DEBUG core: no more bootstrap peers to create 2 connections bootstrap.go:141
16:28:42.181 DEBUG core: bootstrap error: not enough bootstrap peers to bootstrap bootstrap.go:87
16:28:42.182 DEBUG mdns: Handling MDNS entry: 192.168.254.1:4013 QmWDUqqGwHGhWWi538P68Tr5nGNHUHNDUM6pvt4vvk9Kk3 mdns.go:152
16:28:42.182 DEBUG mdns: got our own mdns entry, skipping mdns.go:160
16:28:42.182 DEBUG mdns: Handling MDNS entry: 192.168.254.1:4011 QmVQjdsdyyNiNgRusUBgzYURbdUXQjHGocQ6yAq3Wd6FST mdns.go:152
16:28:42.182 DEBUG mdns: Handling MDNS entry: 192.168.254.1:4012 QmYFUMf9RDiLz8JADXFspoz4WsEWGyh3GKMHyKvdnSJPoF mdns.go:152
16:28:42.183 WARNI core: trying peer info: { [/ip4/192.168.254.1/tcp/4012]} core.go:417
16:28:42.183 WARNI core: trying peer info: { [/ip4/192.168.254.1/tcp/4011]} core.go:417
16:28:42.509 DEBUG mdns: Handling MDNS entry: 10.0.1.59:4001 QmXibDf1TMr5obHigdALwy7iq3bTr2JY2RskW6C3aFcZHu mdns.go:152
16:28:42.509 WARNI core: trying peer info: { [/ip4/10.0.1.59/tcp/4001]} core.go:417
16:28:42.510 DEBUG basichost: host %!s(func() peer.ID=0x14d24f0) dialing basic_host.go:479
16:28:42.510 DEBUG swarm2: [] network dialing peer [] swarm_net.go:42
16:28:42.510 WARNI core: Failed to connect to peer found by discovery: dial backoff core.go:421
16:28:47.182 DEBUG mdns: mdns query complete mdns.go:143
16:28:52.176 DEBUG bitswap: 164 keys in bitswap wantlist workers.go:183
16:28:52.180 DEBUG mdns: starting mdns query mdns.go:130
16:28:52.182 DEBUG mdns: Handling MDNS entry: 192.168.254.1:4013 QmWDUqqGwHGhWWi538P68Tr5nGNHUHNDUM6pvt4vvk9Kk3 mdns.go:152
16:28:52.182 DEBUG mdns: got our own mdns entry, skipping mdns.go:160
16:28:52.182 DEBUG mdns: Handling MDNS entry: 192.168.254.1:4012 QmYFUMf9RDiLz8JADXFspoz4WsEWGyh3GKMHyKvdnSJPoF mdns.go:152
16:28:52.182 DEBUG mdns: Handling MDNS entry: 192.168.254.1:4011 QmVQjdsdyyNiNgRusUBgzYURbdUXQjHGocQ6yAq3Wd6FST mdns.go:152
16:28:52.182 WARNI core: trying peer info: { [/ip4/192.168.254.1/tcp/4012]} core.go:417
16:28:52.182 WARNI core: trying peer info: { [/ip4/192.168.254.1/tcp/4011]} core.go:417
16:28:52.248 DEBUG nat: Attempting port map: tcp/4013 nat.go:168
16:28:52.269 DEBUG nat: NAT Mapping: /ip4/0.0.0.0/tcp/4013 --> /ip4/114.84.243.237/tcp/12179 nat.go:207
16:28:52.429 DEBUG mdns: Handling MDNS entry: 10.0.1.59:4001 QmXibDf1TMr5obHigdALwy7iq3bTr2JY2RskW6C3aFcZHu mdns.go:152
16:28:52.429 WARNI core: trying peer info: { [/ip4/10.0.1.59/tcp/4001]} core.go:417
16:28:52.429 DEBUG basichost: host %!s(func() peer.ID=0x14d24f0) dialing basic_host.go:479
16:28:52.429 DEBUG swarm2: [] network dialing peer [] swarm_net.go:42
16:28:52.430 DEBUG addrutil: InterfaceAddresses: from manet:[/ip4/127.0.0.1 /ip6/::1 /ip6/fe80::1 /ip6/fe80::1cbc:ff22:b0b3:db18 /ip4/10.0.1.225 /ip6/fe80::52b0:8658:c5b9:325b /ip4/192.168.100.1 /ip4/192.168.254.1] addr.go:220
16:28:52.430 DEBUG addrutil: InterfaceAddresses: usable:[/ip4/127.0.0.1 /ip6/::1 /ip4/10.0.1.225 /ip4/192.168.100.1 /ip4/192.168.254.1] addr.go:232
16:28:52.430 DEBUG addrutil: adding resolved addr:/ip6/::/tcp/4013 /ip6/::1/tcp/4013 [/ip6/::1/tcp/4013] addr.go:163
16:28:52.430 DEBUG addrutil: adding resolved addr:/ip4/0.0.0.0/tcp/4013 /ip4/127.0.0.1/tcp/4013 [/ip4/127.0.0.1/tcp/4013] addr.go:163
16:28:52.430 DEBUG addrutil: adding resolved addr:/ip4/0.0.0.0/tcp/4013 /ip4/10.0.1.225/tcp/4013 [/ip4/127.0.0.1/tcp/4013 /ip4/10.0.1.225/tcp/4013] addr.go:163
16:28:52.430 DEBUG addrutil: adding resolved addr:/ip4/0.0.0.0/tcp/4013 /ip4/192.168.100.1/tcp/4013 [/ip4/127.0.0.1/tcp/4013 /ip4/10.0.1.225/tcp/4013 /ip4/192.168.100.1/tcp/4013] addr.go:163
16:28:52.430 DEBUG addrutil: adding resolved addr:/ip4/0.0.0.0/tcp/4013 /ip4/192.168.254.1/tcp/4013 [/ip4/127.0.0.1/tcp/4013 /ip4/10.0.1.225/tcp/4013 /ip4/192.168.100.1/tcp/4013 /ip4/192.168.254.1/tcp/4013] addr.go:163
16:28:52.431 DEBUG addrutil: ResolveUnspecifiedAddresses:[/ip6/::/tcp/4013 /p2p-circuit/ipfs/QmWDUqqGwHGhWWi538P68Tr5nGNHUHNDUM6pvt4vvk9Kk3 /ip4/0.0.0.0/tcp/4013] [/ip4/127.0.0.1 /ip6/::1 /ip4/10.0.1.225 /ip4/192.168.100.1 /ip4/192.168.254.1] [/ip6/::1/tcp/4013 /p2p-circuit/ipfs/QmWDUqqGwHGhWWi538P68Tr5nGNHUHNDUM6pvt4vvk9Kk3 /ip4/127.0.0.1/tcp/4013 /ip4/10.0.1.225/tcp/4013 /ip4/192.168.100.1/tcp/4013 /ip4/192.168.254.1/tcp/4013] addr.go:208
16:28:52.431 DEBUG swarm2: swarm dialing swarm_dial.go:290
16:28:52.431 DEBUG swarm2: swarm dialing /ip4/10.0.1.59/tcp/4001 swarm_dial.go:350
16:28:57.182 DEBUG mdns: mdns query complete mdns.go:143

```