* Protobuf serialization does not distinguish between `[]` and `null`.

* fixes configuration error when upgrading kubeadm from 1.9 to 1.10+ ([#62568](https://github.com/kubernetes/kubernetes/pull/62568), [@liztio](https://github.com/liztio))
    * enforces  kubeadm  upgrading kubernetes from the same major and minor versions as the kubeadm binary.
* Bugfix allowing use of IP-aliases with custom-mode network in GCE setup scripts. ([#62172](https://github.com/kubernetes/kubernetes/pull/62172), [@shyamjvs](https://github.com/shyamjvs))

??otsip?r&b&alac!-oigger?oigger??mu??dna&-&attelrab-inart?inart-attelrab??attelrabinart?inartattelrab?ssela??epmi?ugil??tnelav&-obiv?obiv??vap?z&e&nev?ps&-al?al???irog???l&iuqa!l??leib??m&or?rap??n!acsot?e&dom?is?sec&-&ilrof?ìlrof??ilrof?ìlrof???g&amor&-ailime?ailime??edras?olob??i&ssem?tal??ne!var??o&cna?merc?rev?vas???oneg?p?r!a&csep?rr&ac&-assam?assam??ef??von??etam?tsailgo!-lled?lled???s!ip?sam&-ararrac?ararrac??u&caris?gar???t!a&cilisab?recam??resac?soa!-&d&-&ellav?lav??ellav?lav??ellav??d&...

* Add automatic etcd 3.2->3.1 and 3.1->3.0 minor version rollback support to gcr.io/google_container/etcd images. For HA clusters, all members must be stopped before performing a rollback. ([#59298](https://github.com/kubernetes/kubernetes/pull/59298), [@jpbetz](https://github.com/jpbetz))

arvanedge.ir

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// Submitted by Asei SEKIGUCHI <******@****.***>
user.aseinet.ne.jp
gv.vc
d.gv.vc

// Asociación Amigos de la Informática "Euskalamiga" : http://encounter.eus/
// Submitted by Hector Martin <******@****.***>
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// Association potager.org : https://potager.org/

 - Performance improvements for collections of metrics and summary

### Increase the Kubernetes support window to one year

As of Kubernetes 1.19, bugfix support via patch releases for a Kubernetes minor release has increased from 9 months to 1 year.

- kubeadm: Allow users to skip the kube-proxy init addon phase during init and still be able to join a cluster and perform some other minor operations (but not upgrade). ([#82248](https://github.com/kubernetes/kubernetes/pull/82248), [@rosti](https://github.com/rosti))

### SIG Network

For 1.13, the areas of focus were in IPv6, DNS improvements and some smaller items:

a.prod.fastly.net
a.se
a.ssl.fastly.net
a2hosted.com
aa.no
aaa
aaa.pro
aaa.vodka
aarborte.no
aarp
ab.ca
abashiri.hokkaido.jp
abb
abbott
abbvie
abc
abc.br
abeno.osaka.jp
abiko.chiba.jp
abira.hokkaido.jp
abkhazia.su
able
abo.pa
abogado
abr.it
abruzzo.it
abu.yamaguchi.jp
abudhabi
ac
ac.ae
ac.at
ac.be
ac.ci
ac.cn
ac.cr
ac.cy
ac.fj

* addon-resizer flapping behavior was removed. ([#46850](https://github.com/kubernetes/kubernetes/pull/46850), [@x13n](https://github.com/x13n))
* Change default `httpGet` probe `User-Agent` to `kube-probe/<version major.minor>` if none specified, overriding the default Go `User-Agent`. ([#47729](https://github.com/kubernetes/kubernetes/pull/47729), [@paultyng](https://github.com/paultyng))