Check whether netcheck exists before relying on it
Check whether netcheck exists before relying on it

philipz/weave,paladin74/weave,dpw/weave,errordeveloper/weave,awanke/weave,errordeveloper/weave,philipz/weave,ycaihua/weave,2opremio/weave,narry/weave,BWITS/weave,narry/weave,rade/weave,aaam/weave,OnePaaS/weave,ycaihua/weave,aaam/weave,bboreham/weave,aaam/weave,ycaihua/weave,n054/weave,paladin74/weave,achanda/weave,paladin74/weave,aaam/weave,2opremio/weave,paulbellamy/weave,weaveworks/weave,errordeveloper/weave,beni55/weave,philipz/weave,cgvarela/weave,n054/weave,squaremo/weave,rade/weave,OnePaaS/weave,tomwilkie/weave,bboreham/weave,achanda/weave,n054/weave,kidaa/weave,errordeveloper/weave,dpw/weave,n054/weave,cgvarela/weave,narry/weave,squaremo/weave,awh/weave,achanda/weave,tomwilkie/weave,bboreham/weave,OnePaaS/weave,ycaihua/weave,kidaa/weave,beni55/weave,dpw/weave,weaveworks/weave,squaremo/weave,tomwilkie/weave,squaremo/weave,cgvarela/weave,aaam/weave,weaveworks/weave,2opremio/weave,awanke/weave,awh/weave,narry/weave,narry/weave,OnePaaS/weave,achanda/weave,awh/weave,2opremio/weave,philipz/weave,kidaa/weave,errordeveloper/weave,beni55/weave,paulbellamy/weave,kidaa/weave,BWITS/weave,bboreham/weave,cgvarela/weave,tomwilkie/weave,achanda/weave,kidaa/weave,ycaihua/weave,cgvarela/weave,awh/weave,BWITS/weave,beni55/weave,rade/weave,awh/weave,awanke/weave,bboreham/weave,beni55/weave,paulbellamy/weave,rade/weave,paulbellamy/weave,dpw/weave,BWITS/weave,squaremo/weave,tomwilkie/weave,paladin74/weave,awanke/weave,OnePaaS/weave,dpw/weave,n054/weave,rade/weave,awanke/weave,weaveworks/weave,2opremio/weave,paladin74/weave,BWITS/weave,philipz/weave