fixing #2308 (#2326)

IPV6 too many colons in address
net.SplitHostPort need ipv6 address in [host]:port format

web/service.go

@@ -2,7 +2,6 @@ package web
 
 import (
 	"crypto/tls"
-	"fmt"
 	"net"
 	"net/http"
 	"os"
@@ -13,6 +12,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/urfave/cli/v2"
 	"go-micro.dev/v4"
 	"go-micro.dev/v4/logger"
 	"go-micro.dev/v4/registry"
@@ -22,7 +22,6 @@ import (
 	mnet "go-micro.dev/v4/util/net"
 	signalutil "go-micro.dev/v4/util/signal"
 	mls "go-micro.dev/v4/util/tls"
-	"github.com/urfave/cli/v2"
 )
 
 type service struct {
@@ -85,7 +84,7 @@ func (s *service) genSrv() *registry.Service {
 		Version: s.opts.Version,
 		Nodes: []*registry.Node{{
 			Id:       s.opts.Id,
-			Address:  fmt.Sprintf("%s:%s", addr, port),
+			Address:  net.JoinHostPort(addr, port),
 			Metadata: s.opts.Metadata,
 		}},
 	}