Ipfs gets into bad state after computer sleep

I suspect this happens after I sleep my laptop and/or change networks. I'll notice that IPFS doesn't work (I can't get content, and content I `ipfs add` isn't available on other nodes). In the logs, I'll see a message like

```
19:41:54.117 ERROR ipns-repub: Republisher failed to republish: failed to find any peer in table repub.go:72
```

The process is still running. I'm running this on a laptop, and using systemd (in user mode) to run ipfs.

I [collected debugging](https://github.com/ipfs/go-ipfs/issues/2594#issuecomment-212506980) information, and uploaded it here: [ipfs-debug-20150531-republisher-failed.tar.gz](https://ipfs.io/ipfs/QmPdHCCYMr8YdURmdBzCiq6aC8z3GHjw8iPUWbpXDVZe9f/ipfs-debug-20150531-republisher-failed.tar.gz).