commands/reachability: cleanup + troubleshooting info
commands/reachability: cleanup + troubleshooting info

dalehamel/serf,samaitra/serf,jmptrader/serf,mbrukman/serf,dalehamel/serf,yonglehou/serf,mbrukman/serf,gnawhleinad/serf,minhkiller/serf,hashicorp/serf,mapuri/serf,gnawhleinad/serf,pmenglund/serf,yonglehou/serf,patrickviet/serf,FollowMyDev/serf,mbrukman/serf,yonglehou/serf,FollowMyDev/serf,samaitra/serf,gnawhleinad/serf,mapuri/serf,FollowMyDev/serf,dalehamel/serf,gnawhleinad/serf,pmenglund/serf,yonglehou/serf,pmenglund/serf,patrickviet/serf,jmptrader/serf,samaitra/serf,patrickviet/serf,FollowMyDev/serf,samaitra/serf,minhkiller/serf,mbrukman/serf,hashicorp/serf,hashicorp/serf,curtiszimmerman/serf,dalehamel/serf,mapuri/serf,samaitra/serf,mapuri/serf,minhkiller/serf,minhkiller/serf,curtiszimmerman/serf,yonglehou/serf,hashicorp/serf,dalehamel/serf,patrickviet/serf,mapuri/serf,mbrukman/serf,minhkiller/serf,jmptrader/serf,mbrukman/serf,minhkiller/serf,mapuri/serf,dalehamel/serf,jmptrader/serf,gnawhleinad/serf,curtiszimmerman/serf,pmenglund/serf,jmptrader/serf,FollowMyDev/serf,pmenglund/serf,hashicorp/serf,patrickviet/serf,patrickviet/serf,curtiszimmerman/serf,FollowMyDev/serf,jmptrader/serf,curtiszimmerman/serf,curtiszimmerman/serf,yonglehou/serf,gnawhleinad/serf,pmenglund/serf,samaitra/serf