Make sure debian net post-up never returns an error code.
Make sure debian net post-up never returns an error code.

Inspired by e7dce43af3905a7a986ef6e3402bf6809ab90f16.

I'm using this configuration in my Vagrantfile:
config.vm.network :public_network, use_dhcp_assigned_default_route: true

Every once in a while the secondary network interface would not come
up properly and cause the init scripts to wait for ~ 3 minutes before
giving up and continue with booting.

muhanadra/vagrant,Endika/vagrant,cgvarela/vagrant,fnewberg/vagrant,genome21/vagrant,kamazee/vagrant,mwrock/vagrant,sax/vagrant,tbarrongh/vagrant,ArloL/vagrant,genome21/vagrant,sni/vagrant,invernizzi-at-google/vagrant,apertoso/vagrant,jkburges/vagrant,Avira/vagrant,patrys/vagrant,teotihuacanada/vagrant,patrys/vagrant,janek-warchol/vagrant,lonniev/vagrant,PatOShea/vagrant,tbriggs-curse/vagrant,gitebra/vagrant,aaam/vagrant,philoserf/vagrant,jmanero/vagrant,PatOShea/vagrant,PatOShea/vagrant,blueyed/vagrant,crashlytics/vagrant,pwnall/vagrant,nickryand/vagrant,sni/vagrant,tjanez/vagrant,aaam/vagrant,dharmab/vagrant,jfchevrette/vagrant,gpkfr/vagrant,sax/vagrant,tomfanning/vagrant,jberends/vagrant,kamazee/vagrant,bshurts/vagrant,PatrickLang/vagrant,krig/vagrant,modulexcite/vagrant,nickryand/vagrant,senglin/vagrant,ianmiell/vagrant,Chhunlong/vagrant,dustymabe/vagrant,teotihuacanada/vagrant,kalabiyau/vagrant,krig/vagrant,PatrickLang/vagrant,Chhed13/vagrant,kamazee/vagrant,bshurts/vagrant,jhoblitt/vagrant,mkuzmin/vagrant,justincampbell/vagrant,cgvarela/vagrant,bheuvel/vagrant,stephancom/vagrant,jkburges/vagrant,jhoblitt/vagrant,pwnall/vagrant,signed8bit/vagrant,jkburges/vagrant,blueyed/vagrant,Chhed13/vagrant,mkuzmin/vagrant,mkuzmin/vagrant,pwnall/vagrant,bheuvel/vagrant,cgvarela/vagrant,wangfakang/vagrant,taliesins/vagrant,darkn3rd/vagrant,sni/vagrant,jmanero/vagrant,benizi/vagrant,bdwyertech/vagrant,benizi/vagrant,philoserf/vagrant,dharmab/vagrant,dharmab/vagrant,dhoer/vagrant,h4ck3rm1k3/vagrant,senglin/vagrant,h4ck3rm1k3/vagrant,jtopper/vagrant,apertoso/vagrant,loren-osborn/vagrant,lukebakken/vagrant,blueyed/vagrant,crashlytics/vagrant,doy/vagrant,gitebra/vagrant,darkn3rd/vagrant,pwnall/vagrant,ArloL/vagrant,dhoer/vagrant,zsjohny/vagrant,TheBigBear/vagrant,chrisvire/vagrant,mwarren/vagrant,tomfanning/vagrant,zsjohny/vagrant,lonniev/vagrant,chrisvire/vagrant,aaam/vagrant,jkburges/vagrant,chrisroberts/vagrant,tbarrongh/vagrant,signed8bit/vagrant,carlosefr/vagrant,lukebakken/vagrant,mwrock/vagrant,bryson/vagrant,muhanadra/vagrant,jean/vagrant,mitchellh/vagrant,senglin/vagrant,h4ck3rm1k3/vagrant,jhoblitt/vagrant,Sgoettschkes/vagrant,chrisvire/vagrant,marxarelli/vagrant,vamegh/vagrant,loren-osborn/vagrant,dharmab/vagrant,tomfanning/vagrant,bdwyertech/vagrant,Chhunlong/vagrant,vamegh/vagrant,chrisroberts/vagrant,benizi/vagrant,PatrickLang/vagrant,tbarrongh/vagrant,krig/vagrant,modulexcite/vagrant,muhanadra/vagrant,mitchellh/vagrant,tbriggs-curse/vagrant,benizi/vagrant,loren-osborn/vagrant,gbarberi/vagrant,johntron/vagrant,taliesins/vagrant,mwarren/vagrant,blueyed/vagrant,kalabiyau/vagrant,jtopper/vagrant,Sgoettschkes/vagrant,myrjola/vagrant,benh57/vagrant,kamigerami/vagrant,myrjola/vagrant,vamegh/vagrant,crashlytics/vagrant,Chhed13/vagrant,bdwyertech/vagrant,jberends/vagrant,darkn3rd/vagrant,kamigerami/vagrant,tschortsch/vagrant,Avira/vagrant,genome21/vagrant,petems/vagrant,kamigerami/vagrant,bdwyertech/vagrant,johntron/vagrant,zsjohny/vagrant,mpoeter/vagrant,senglin/vagrant,sax/vagrant,patrys/vagrant,marxarelli/vagrant,gbarberi/vagrant,dhoer/vagrant,doy/vagrant,janek-warchol/vagrant,bheuvel/vagrant,jmanero/vagrant,zsjohny/vagrant,teotihuacanada/vagrant,johntron/vagrant,wangfakang/vagrant,PatOShea/vagrant,aneeshusa/vagrant,johntron/vagrant,gbarberi/vagrant,jtopper/vagrant,aneeshusa/vagrant,mpoeter/vagrant,Endika/vagrant,kalabiyau/vagrant,bheuvel/vagrant,bshurts/vagrant,bryson/vagrant,marxarelli/vagrant,doy/vagrant,modulexcite/vagrant,mwarren/vagrant,tbarrongh/vagrant,denisbr/vagrant,fnewberg/vagrant,aneeshusa/vagrant,justincampbell/vagrant,gpkfr/vagrant,tbriggs-curse/vagrant,nickryand/vagrant,bryson/vagrant,doy/vagrant,gbarberi/vagrant,denisbr/vagrant,modulexcite/vagrant,dustymabe/vagrant,Avira/vagrant,darkn3rd/vagrant,jfchevrette/vagrant,kamazee/vagrant,bshurts/vagrant,genome21/vagrant,crashlytics/vagrant,myrjola/vagrant,carlosefr/vagrant,ArloL/vagrant,philoserf/vagrant,aaam/vagrant,petems/vagrant,cgvarela/vagrant,Sgoettschkes/vagrant,ianmiell/vagrant,nickryand/vagrant,myrjola/vagrant,mkuzmin/vagrant,benh57/vagrant,tjanez/vagrant,gpkfr/vagrant,justincampbell/vagrant,h4ck3rm1k3/vagrant,jhoblitt/vagrant,jean/vagrant,mitchellh/vagrant,lonniev/vagrant,mpoeter/vagrant,kalabiyau/vagrant,benh57/vagrant,aneeshusa/vagrant,jberends/vagrant,patrys/vagrant,Avira/vagrant,invernizzi-at-google/vagrant,jtopper/vagrant,bryson/vagrant,wangfakang/vagrant,fnewberg/vagrant,mwarren/vagrant,gitebra/vagrant,tschortsch/vagrant,tbriggs-curse/vagrant,janek-warchol/vagrant,loren-osborn/vagrant,justincampbell/vagrant,Sgoettschkes/vagrant,mwrock/vagrant,philoserf/vagrant,gitebra/vagrant,krig/vagrant,apertoso/vagrant,tjanez/vagrant,mitchellh/vagrant,jberends/vagrant,jfchevrette/vagrant,Endika/vagrant,tjanez/vagrant,ianmiell/vagrant,chrisroberts/vagrant,marxarelli/vagrant,fnewberg/vagrant,ArloL/vagrant,lukebakken/vagrant,jmanero/vagrant,carlosefr/vagrant,TheBigBear/vagrant,PatrickLang/vagrant,dustymabe/vagrant,petems/vagrant,denisbr/vagrant,dustymabe/vagrant,invernizzi-at-google/vagrant,tschortsch/vagrant,wangfakang/vagrant,taliesins/vagrant,petems/vagrant,sni/vagrant,Endika/vagrant,kamigerami/vagrant,mwrock/vagrant,jean/vagrant,vamegh/vagrant,Chhed13/vagrant,teotihuacanada/vagrant,apertoso/vagrant,jfchevrette/vagrant,sax/vagrant,signed8bit/vagrant,stephancom/vagrant,gpkfr/vagrant,Chhunlong/vagrant,stephancom/vagrant,muhanadra/vagrant,chrisvire/vagrant,TheBigBear/vagrant,TheBigBear/vagrant,tomfanning/vagrant,lonniev/vagrant,benh57/vagrant,ianmiell/vagrant,dhoer/vagrant,janek-warchol/vagrant,stephancom/vagrant,invernizzi-at-google/vagrant,taliesins/vagrant,chrisroberts/vagrant,signed8bit/vagrant,tschortsch/vagrant,mpoeter/vagrant,jean/vagrant,lukebakken/vagrant,Chhunlong/vagrant,carlosefr/vagrant,denisbr/vagrant