You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: interfaces.go
    path of file: ./repos/sliver/vendor/tailscale.com/net/interfaces
    
    the code of the file until where you have to start completion: // Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause

// Package interfaces contains helpers for looking up system network interfaces.
package interfaces

import (
	"bytes"
	"fmt"
	"net"
	"net/http"
	"net/netip"
	"runtime"
	"slices"
	"sort"
	"strings"

	"tailscale.com/hostinfo"
	"tailscale.com/net/netaddr"
	"tailscale.com/net/tsaddr"
	"tailscale.com/net/tshttpproxy"
)

// LoginEndpointForProxyDetermi
    
func (s *State) Equal(s2 *State) bool {
	if s == nil && s2 == nil {
		return true
	}
	if s == nil || s2 == nil {
		return false
	}
	if s.HaveV6 != s2.HaveV6 ||
		s.HaveV4 != s2.HaveV4 ||
		s.IsExpensive != s2.IsExpensive ||
		s.DefaultRouteInterface != s2.DefaultRouteInterface ||
		s.HTTPProxy != s2.HTTPProxy ||
		s.PAC != s2.PAC {
		return false
	}
	for iname, i := range s.Interface {
		i2, ok := s2.Interface[iname]
		if !ok {
			return false
		}
		if !i.Equal(i2) {
			return false
		}
	}
	for iname, vv := range s.InterfaceIPs {
		if !slices.Equal(vv, s2.InterfaceIPs[iname]) {
			return false
		}
	}
	return true
}