## Changelog since v1.25.6

## Changes by Kind

### Feature

- Kubelet TCP and HTTP probes are more effective using networking resources: conntrack entries, sockets, ... 

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* Fixed racy panics when using fake watches with ObjectTracker ([#61195](https://github.com/kubernetes/kubernetes/pull/61195), [@grantr](https://github.com/grantr))
* Fixed mounting of UNIX sockets(and other special files) in subpaths ([#61480](https://github.com/kubernetes/kubernetes/pull/61480), [@gnufscied](https://github.com/gnufied))

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pkg syscall (linux-386), const SizeofSockaddrNetlink ideal-int
pkg syscall (linux-386), const SizeofSockaddrUnix ideal-int
pkg syscall (linux-386), const SizeofUcred ideal-int
pkg syscall (linux-386), const TCGETS ideal-int
pkg syscall (linux-386), const TCP_CONGESTION ideal-int
pkg syscall (linux-386), const TCP_CORK ideal-int
pkg syscall (linux-386), const TCP_DEFER_ACCEPT ideal-int

- Kubelet TCP and HTTP probes are now more effective using networking resources:
  conntrack entries, sockets. This is achieved by reducing the `TIME-WAIT` state
  of the connection to 1 second, instead of the defaults 60 seconds. This allows

pkg syscall (linux-386), const SizeofTCPInfo = 104
pkg syscall (linux-386), const SizeofTCPInfo ideal-int
pkg syscall (linux-386), const SizeofUcred = 12
pkg syscall (linux-386), const TCGETS = 21505
pkg syscall (linux-386), const TCP_CONGESTION = 13
pkg syscall (linux-386), const TCP_CORK = 3
pkg syscall (linux-386), const TCP_DEFER_ACCEPT = 9
pkg syscall (linux-386), const TCP_INFO = 11

- Fixes kubelet to retrieve number of sockets from cAdvisor MachineInfo, instead of assuming it to be equal to number of NUMA nodes. ([#99771](https://github.com/kubernetes/kubernetes/pull/99771), [@iwankgb](https://github.com/iwankgb)) [SIG Node]

    * - Don't generate empty record for externalName service.
    * - Add validation for upstreamNameserver port.
    * - Update go version to 1.9.3.
* Fix mounting of UNIX sockets(and other special files) in subpaths ([#61480](https://github.com/kubernetes/kubernetes/pull/61480), [@gnufied](https://github.com/gnufied))