Svc REST: Better errors on stack-downgrades
Svc REST: Better errors on stack-downgrades

Converting dual-stack to single-stack needs good errors.

Clarifai/kubernetes,rafax/kubernetes,warmchang/kubernetes,jingxu97/kubernetes,zhouhaibing089/kubernetes,mahak/kubernetes,micahhausler/kubernetes,sdminonne/kubernetes,roberthbailey/kubernetes,k82cn/kubernetes,mahak/kubernetes,saad-ali/kubernetes,nckturner/kubernetes,csrwng/kubernetes,nckturner/kubernetes,aledbf/kubernetes,cofyc/kubernetes,humblec/kubernetes,chestack/kubernetes,warmchang/kubernetes,deads2k/kubernetes,hex108/kubernetes,kevin-wangzefeng/kubernetes,matthyx/kubernetes,enj/kubernetes,Clarifai/kubernetes,cofyc/kubernetes,saad-ali/kubernetes,tpepper/kubernetes,carlory/kubernetes,bparees/kubernetes,mikedanese/kubernetes,dims/kubernetes,aledbf/kubernetes,mahak/kubernetes,ravilr/kubernetes,fabriziopandini/kubernetes,deads2k/kubernetes,BenTheElder/kubernetes,hex108/kubernetes,iameli/kubernetes,sdminonne/kubernetes,zhouhaibing089/kubernetes,k82/kubernetes,bparees/kubernetes,ii/kubernetes,jackfrancis/kubernetes,cblecker/kubernetes,sdminonne/kubernetes,rrati/kubernetes,aledbf/kubernetes,mahak/kubernetes,olivierlemasle/kubernetes,mkumatag/kubernetes,nikhita/kubernetes,fanzhangio/kubernetes,wongma7/kubernetes,saad-ali/kubernetes,sdminonne/kubernetes,mikedanese/kubernetes,shyamjvs/kubernetes,soltysh/kubernetes,alejandroEsc/kubernetes,dixudx/kubernetes,jsafrane/kubernetes,jessfraz/kubernetes,BenTheElder/kubernetes,k82/kubernetes,rafax/kubernetes,kevin-wangzefeng/kubernetes,monopole/kubernetes,olivierlemasle/kubernetes,PiotrProkop/kubernetes,jsafrane/kubernetes,micahhausler/kubernetes,enj/kubernetes,kevin-wangzefeng/kubernetes,kubernetes/kubernetes,li-ang/kubernetes,micahhausler/kubernetes,dixudx/kubernetes,wongma7/kubernetes,carlory/kubernetes,bparees/kubernetes,matthyx/kubernetes,olivierlemasle/kubernetes,ii/kubernetes,tengqm/kubernetes,wongma7/kubernetes,mosoft521/kubernetes,ping035627/kubernetes,warmchang/kubernetes,fanzhangio/kubernetes,verb/kubernetes,mosoft521/kubernetes,kubernetes/kubernetes,GulajavaMinistudio/kubernetes,zhangmingld/kubernetes,hex108/kubernetes,zhangmingld/kubernetes,feiskyer/kubernetes,humblec/kubernetes,saad-ali/kubernetes,iameli/kubernetes,GulajavaMinistudio/kubernetes,openshift/kubernetes,feiskyer/kubernetes,tengqm/kubernetes,mkumatag/kubernetes,wongma7/kubernetes,kubernetes/kubernetes,warmchang/kubernetes,enj/kubernetes,rnaveiras/kubernetes,monopole/kubernetes,k82/kubernetes,fanzhangio/kubernetes,ping035627/kubernetes,zhangmingld/kubernetes,sdminonne/kubernetes,aledbf/kubernetes,GulajavaMinistudio/kubernetes,chestack/kubernetes,iameli/kubernetes,rnaveiras/kubernetes,thockin/kubernetes,jessfraz/kubernetes,jessfraz/kubernetes,kevin-wangzefeng/kubernetes,k82cn/kubernetes,rnaveiras/kubernetes,linux-on-ibm-z/kubernetes,cblecker/kubernetes,GulajavaMinistudio/kubernetes,mengqiy/kubernetes,warmchang/kubernetes,ravilr/kubernetes,k82/kubernetes,fabriziopandini/kubernetes,openshift/kubernetes,feiskyer/kubernetes,chestack/kubernetes,lojies/kubernetes,mikebrow/kubernetes,dixudx/kubernetes,mikedanese/kubernetes,humblec/kubernetes,feiskyer/kubernetes,fabriziopandini/kubernetes,iameli/kubernetes,Clarifai/kubernetes,verb/kubernetes,gnufied/kubernetes,mikedanese/kubernetes,mikedanese/kubernetes,gnufied/kubernetes,csrwng/kubernetes,saad-ali/kubernetes,aledbf/kubernetes,jagosan/kubernetes,matthyx/kubernetes,zhouhaibing089/kubernetes,dims/kubernetes,spzala/kubernetes,tpepper/kubernetes,chestack/kubernetes,lojies/kubernetes,li-ang/kubernetes,lojies/kubernetes,monopole/kubernetes,jessfraz/kubernetes,shyamjvs/kubernetes,rrati/kubernetes,verb/kubernetes,carlory/kubernetes,hex108/kubernetes,alejandroEsc/kubernetes,tengqm/kubernetes,deads2k/kubernetes,feiskyer/kubernetes,nckturner/kubernetes,cofyc/kubernetes,mkumatag/kubernetes,mkumatag/kubernetes,matthyx/kubernetes,liggitt/kubernetes,lojies/kubernetes,MikeSpreitzer/kubernetes,fabriziopandini/kubernetes,thockin/kubernetes,ii/kubernetes,fabriziopandini/kubernetes,liggitt/kubernetes,jingxu97/kubernetes,fanzhangio/kubernetes,thockin/kubernetes,tengqm/kubernetes,ping035627/kubernetes,hex108/kubernetes,mengqiy/kubernetes,zhouhaibing089/kubernetes,roberthbailey/kubernetes,jagosan/kubernetes,jackfrancis/kubernetes,tpepper/kubernetes,linux-on-ibm-z/kubernetes,alejandroEsc/kubernetes,jingxu97/kubernetes,mosoft521/kubernetes,alejandroEsc/kubernetes,fanzhangio/kubernetes,linux-on-ibm-z/kubernetes,tpepper/kubernetes,lojies/kubernetes,linux-on-ibm-z/kubernetes,thockin/kubernetes,k82cn/kubernetes,nikhita/kubernetes,enj/kubernetes,soltysh/kubernetes,li-ang/kubernetes,kubernetes/kubernetes,zhouhaibing089/kubernetes,soltysh/kubernetes,li-ang/kubernetes,carlory/kubernetes,jackfrancis/kubernetes,MikeSpreitzer/kubernetes,MikeSpreitzer/kubernetes,humblec/kubernetes,cblecker/kubernetes,shyamjvs/kubernetes,roberthbailey/kubernetes,monopole/kubernetes,rafax/kubernetes,olivierlemasle/kubernetes,bparees/kubernetes,dims/kubernetes,GulajavaMinistudio/kubernetes,k82/kubernetes,zhangmingld/kubernetes,csrwng/kubernetes,mengqiy/kubernetes,k82cn/kubernetes,micahhausler/kubernetes,mosoft521/kubernetes,olivierlemasle/kubernetes,rnaveiras/kubernetes,nikhita/kubernetes,verb/kubernetes,jsafrane/kubernetes,kubernetes/kubernetes,deads2k/kubernetes,ping035627/kubernetes,deads2k/kubernetes,soltysh/kubernetes,mikebrow/kubernetes,wongma7/kubernetes,ravilr/kubernetes,nikhita/kubernetes,mikebrow/kubernetes,spzala/kubernetes,dims/kubernetes,spzala/kubernetes,BenTheElder/kubernetes,shyamjvs/kubernetes,thockin/kubernetes,MikeSpreitzer/kubernetes,gnufied/kubernetes,MikeSpreitzer/kubernetes,ii/kubernetes,PiotrProkop/kubernetes,rrati/kubernetes,iameli/kubernetes,jingxu97/kubernetes,roberthbailey/kubernetes,mengqiy/kubernetes,alejandroEsc/kubernetes,cofyc/kubernetes,openshift/kubernetes,gnufied/kubernetes,dixudx/kubernetes,cblecker/kubernetes,cofyc/kubernetes,jsafrane/kubernetes,tpepper/kubernetes,carlory/kubernetes,verb/kubernetes,hex108/kubernetes,Clarifai/kubernetes,Clarifai/kubernetes,Clarifai/kubernetes,nckturner/kubernetes,mengqiy/kubernetes,jackfrancis/kubernetes,rrati/kubernetes,monopole/kubernetes,humblec/kubernetes,nikhita/kubernetes,csrwng/kubernetes,mahak/kubernetes,liggitt/kubernetes,liggitt/kubernetes,mikebrow/kubernetes,ping035627/kubernetes,spzala/kubernetes,nckturner/kubernetes,tengqm/kubernetes,PiotrProkop/kubernetes,openshift/kubernetes,rafax/kubernetes,jagosan/kubernetes,gnufied/kubernetes,chestack/kubernetes,zhangmingld/kubernetes,matthyx/kubernetes,ii/kubernetes,jsafrane/kubernetes,BenTheElder/kubernetes,ravilr/kubernetes,dixudx/kubernetes,rnaveiras/kubernetes,jagosan/kubernetes,fanzhangio/kubernetes,soltysh/kubernetes,BenTheElder/kubernetes,micahhausler/kubernetes,tpepper/kubernetes,PiotrProkop/kubernetes,ravilr/kubernetes,liggitt/kubernetes,mosoft521/kubernetes,enj/kubernetes,jagosan/kubernetes,csrwng/kubernetes,spzala/kubernetes,cblecker/kubernetes,cofyc/kubernetes,mkumatag/kubernetes,jackfrancis/kubernetes,dims/kubernetes,jingxu97/kubernetes,rrati/kubernetes,PiotrProkop/kubernetes,zhangmingld/kubernetes,mikebrow/kubernetes,linux-on-ibm-z/kubernetes,roberthbailey/kubernetes,jessfraz/kubernetes,shyamjvs/kubernetes,li-ang/kubernetes,openshift/kubernetes,saad-ali/kubernetes,kevin-wangzefeng/kubernetes,bparees/kubernetes,k82cn/kubernetes