## Urgent Upgrade Notes 

### (No, really, you MUST read this before you upgrade)

binary_digits  = binary_digit { [ "_" ] binary_digit } .
octal_digits   = octal_digit { [ "_" ] octal_digit } .
hex_digits     = hex_digit { [ "_" ] hex_digit } .
</pre>

<pre>
42
4_2
0600
0_600
0o600
0O600       // second character is capital letter 'O'
0xBadFace
0xBad_Face
0x_67_7a_2f_cc_40_c6
170141183460469231731687303715884105727
170_141183_460469_231731_687303_715884_105727

      <!--  size before them. They almost always have 0x00 after, either -->
      <!--  the length of a child atom, or start of data -->
      <match value="moov\000" type="string" offset="4"/>
      <match value="mdat\000" type="string" offset="4"/>
      <match value="free\000" type="string" offset="4"/>
      <match value="skip\000" type="string" offset="4"/>
      <match value="pnot\000" type="string" offset="4"/>

pkg syscall (darwin-arm64), const B50 ideal-int
pkg syscall (darwin-arm64), const B57600 = 57600
pkg syscall (darwin-arm64), const B57600 ideal-int
pkg syscall (darwin-arm64), const B600 = 600
pkg syscall (darwin-arm64), const B600 ideal-int
pkg syscall (darwin-arm64), const B7200 = 7200
pkg syscall (darwin-arm64), const B7200 ideal-int
pkg syscall (darwin-arm64), const B75 = 75
pkg syscall (darwin-arm64), const B75 ideal-int

- Expand scheduler priority functions and scheduling framework plugins' node score range to [0, 100]. Note: this change is internal and does not affect extender and RequestedToCapacityRatio custom priority, which are still expected to provide a [0, 10] range. ([#83522](https://github.com/kubernetes/kubernetes/pull/83522), [@draveness](https://g...

parameter in kube-proxy is misleading, no port is opened with this address. Instead it is translated internally to "nodeIP". The nodeIPs for both families are now taken from the Node object if `--bind-address` is unspecified or set to the "any" address (0.0.0.0 or ::). It is recommended to leave `--bind-address` unspecified, and in particular avoid to set it to localhost (127.0.0.1 or ::1) ([#119525](https://github.com/kubernetes/kubernetes/pull/119525), [@uablrek](https://github.com/uablrek)) [SIG Network...

- The kubelet, when using `--cloud-provider=external` can use the `--node-ip` flag with one of the unspecified addresses 0.0.0.0 or ::, to create the Node with the IP of the default gateway of the corresponding IP family and then delegating the responsibility to the external cloud provider. This solves the bootstrap problems of out of tree cloud providers that are deployed...

- Add --permit-address-sharing flag to `kube-apiserver` to listen with `SO_REUSEADDR`. While allowing to listen on wildcard IPs like 0.0.0.0 and specific IPs in parallel, it avoids waiting for the kernel to release socket in `TIME_WAIT` state, and hence, considerably reducing `kube-apiserver` restart times under certain conditions. ([#93861](https://github.com/kubernetes/kubernetes/pull/93861),...

- Apiserver will now reject connection attempts to `0.0.0.0/::` when handling a proxy subresource request. ([#107402](https://github.com/kubernetes/kubernetes/pull/107402), [@anguslees](https://github.com/anguslees))

* kubeadm: Create /var/lib/etcd with correct permissions (0700) by default. ([#71885](https://github.com/kubernetes/kubernetes/pull/71885), [@dims](https://github.com/dims))