return ip4[0] == 127
	}
	return ip.Equal(IPv6loopback)
}

// IsPrivate reports whether ip is a private address, according to
// RFC 1918 (IPv4 addresses) and RFC 4193 (IPv6 addresses).
func (ip IP) IsPrivate() bool {
	if ip4 := ip.To4(); ip4 != nil {
		// Following RFC 1918, Section 3. Private Address Space which says:
		//   The Internet Assigned Numbers Authority (IANA) has reserved the

000001a0  1e fc 2e b2 7a 3a 07 22  72 25 dc d3 d1 8f 38 07  |....z:."r%....8.|
000001b0  63 2f 18 f5 da b0 91 66  a1 47 16 ad 76 82 98 07  |c/.....f.G..v...|
000001c0  6f a7 c8 79 43 73 4c 8c  2b 5d af 5a 7c c2 19 18  |o..yCsL.+].Z|...|
000001d0  8d ee e2 ba fc 07 9b df  7e 17 af 54 c4 1f d8 a1  |........~..T....|
000001e0  bd 66 93 e3 80 7e 9d a3  43 46 34 eb f9 9e 0b 77  |.f...~..CF4....w|

// (IPv4 addresses) and RFC 4193 (IPv6 addresses). That is, it reports whether
// ip is in 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, or fc00::/7. This is the
// same as [net.IP.IsPrivate].
func (ip Addr) IsPrivate() bool {
	if ip.Is4In6() {
		ip = ip.Unmap()
	}

	// Match the stdlib's IsPrivate logic.
	if ip.Is4() {

    iptables -w -t nat -A IP-MASQ -d 10.0.0.0/8 -m comment --comment "ip-masq: RFC 1918 reserved range is not subject to MASQUERADE" -j RETURN
    iptables -w -t nat -A IP-MASQ -d 172.16.0.0/12 -m comment --comment "ip-masq: RFC 1918 reserved range is not subject to MASQUERADE" -j RETURN
    iptables -w -t nat -A IP-MASQ -d 192.168.0.0/16 -m comment --comment "ip-masq: RFC 1918 reserved range is not subject to MASQUERADE" -j RETURN

	SYS___PTHREAD_SECURITY_NP_A         = 0x774 // 1908
	SYS___QUERYMETRICS_A                = 0x775 // 1909
	SYS___QUERYSCHENV                   = 0x776 // 1910
	SYS___READV_A                       = 0x777 // 1911
	SYS_____SERVER_CLASSIFY_A           = 0x778 // 1912
	SYS_____SERVER_INIT_A               = 0x779 // 1913
	SYS_____SERVER_PWU_A                = 0x77A // 1914
	SYS___STRCASECMP_A                  = 0x77B // 1915

	MOVW	$1907, R12
	B	runtime·callbackasm1(SB)
	MOVW	$1908, R12
	B	runtime·callbackasm1(SB)
	MOVW	$1909, R12
	B	runtime·callbackasm1(SB)
	MOVW	$1910, R12
	B	runtime·callbackasm1(SB)
	MOVW	$1911, R12
	B	runtime·callbackasm1(SB)
	MOVW	$1912, R12
	B	runtime·callbackasm1(SB)
	MOVW	$1913, R12
	B	runtime·callbackasm1(SB)
	MOVW	$1914, R12
	B	runtime·callbackasm1(SB)
	MOVW	$1915, R12

	MOVD	$1907, R12
	B	runtime·callbackasm1(SB)
	MOVD	$1908, R12
	B	runtime·callbackasm1(SB)
	MOVD	$1909, R12
	B	runtime·callbackasm1(SB)
	MOVD	$1910, R12
	B	runtime·callbackasm1(SB)
	MOVD	$1911, R12
	B	runtime·callbackasm1(SB)
	MOVD	$1912, R12
	B	runtime·callbackasm1(SB)
	MOVD	$1913, R12
	B	runtime·callbackasm1(SB)
	MOVD	$1914, R12
	B	runtime·callbackasm1(SB)
	MOVD	$1915, R12

		{Equal, 15, 17},
		{Equal, 15, 18},
		{Equal, 15, 19},
		{Equal, 15, vconst(20)},
		{Equal, 15, vconst2(20)},
		{Equal, 15, 25},

		{Equal, 16, 17},
		{Equal, 16, 18},
		{Equal, 16, 19},
		{Equal, 16, vconst(20)},
		{Equal, 16, vconst2(20)},
		{Equal, 16, 25},

		{Equal, 17, 18},
		{Equal, 17, 19},
		{Equal, 17, vconst(20)},
		{Equal, 17, vconst2(20)},
		{Equal, 17, 25},

_Nothing has changed._



# v1.18.18


## Downloads for v1.18.18

### Source Code

filename | sha512 hash
-------- | -----------
[kubernetes.tar.gz](https://dl.k8s.io/v1.18.18/kubernetes.tar.gz) | 36e254401fae0ddcf05aa57a76a8ea9772f6a61492a898af48c3689132edf77bd2f551b7c93043ff78f48d5c5543b0957c8768db2422347fea1d4033f3337b7d

Support creation of GCP Internal Load Balancers from Service objects ([#46663](https://github.com/kubernetes/kubernetes/pull/46663), [@nicksardo](https://github.com/nicksardo))

  * GCE installs will now avoid IP masquerade for all RFC-1918 IP blocks, rather than just 10.0.0.0/8. This means that clusters can be created in 192.168.0.0./16 and 172.16.0.0/12 while preserving the container IPs (which would be lost before). ([#46473](https://github.com/kubernetes/kubernetes/pull/46473), [...