Avoid panic by receiving vpnv6 prefixes with zebra reported in issue #…

…2113

- Additionally bug fix which avoid panic caused by displaying vpnv6 prefixes using gobgp vrf rib
- Supporting FRRouting 7.1.x

cmd/gobgp/neighbor.go

@@ -925,7 +925,8 @@ func showNeighborRib(r string, name string, args []string) error {
 			for _, dst := range rib {
 				prefix := dst.Prefix
 				if t == api.TableType_VRF {
-					s := strings.Split(prefix, ":")
+					// extract prefix from original which is RD(AS:VRF):IPv4 or IPv6 address
+					s := strings.SplitN(prefix, ":", 3)
 					prefix = s[len(s)-1]
 				}
 				_, p, _ := net.ParseCIDR(prefix)

docs/sources/zebra.md

@@ -15,11 +15,11 @@ version 4), 5.0.x (Zebra API version 5), and 7.0.x (Zebra API version
 6) are supported as default. FRRouting version 5.0.x changes zebra
 message and it doesn't keep backward compatibility for FRRouting
 version 4.0.x although FRRouting version 4.0.x and 5.0.x use Zebra API
-version 5. Also, FRRouting version 7.0.x changes zebra message and it
-doesn't keep backward compatibility for FRRouting version 6.0.x
-although FRRouting version 6.0.x and 7.0.x use Zebra API version 6. If
-you need to integrate with FRRouting version 4.0.x or 6.0x, please use
-`software-name` configuration.
+version 5. Also, FRRouting version 7.0.x and 7.1.x changes zebra
+message and it doesn't keep backward compatibility for FRRouting
+version 6.0.x although FRRouting version 6.0.x, 7.0.x and 7.1.x use
+Zebra API version 6. If you need to integrate with FRRouting version
+4.0.x or 6.0x, please use `software-name` configuration.
 
 ## Contents
 
@@ -59,15 +59,17 @@ You need to enable the zebra feature in the Global configuration as follows.
   For connecting to FRRouting 7.0.x, please specify `6`.
 
 - `mpls-label-range-size` specifies mpls label range size for
-  requesting to Zebra. It works with FRRouting 5.0.x, FRRouting
-  6.0.x and FRRouting 7.0.x.
+  requesting to Zebra. It works with FRRouting 5.0.x, FRRouting 6.0.x,
+  FRRouting 7.0.x and FRRouting 7.1.x.
 
 - `sotware-name` specifies software name for zebra when only `version`
   configuration cannot specify software uniquely. This configuration
   is used with 'version' configuration. For connecting to FRRouting
-  6.0.x, please specify `6` as `version` and `frr6` as
-  `software-name`.  For connecting to FRRouting 4.0.x, please specify
-  `5` as `version` and `frr4` as `software-name`.
+  7.1.x, please specify `6` as `version` and `frr7.1` as
+  `software-name`. For connecting to FRRouting 6.0.x, please specify
+  `6` as `version` and `frr6` as `software-name`.  For connecting to
+  FRRouting 4.0.x, please specify `5` as `version` and `frr4` as
+  `software-name`.
 
 ## Check Routes from zebra
 

internal/pkg/config/default.go

@@ -422,7 +422,7 @@ func setDefaultConfigValuesWithViper(v *viper.Viper, b *BgpConfigSet) error {
 	}
 
 	//SoftwareName for Zebra
-	allowableZebraSoftwareName := []string{"", "quagga", "frr3", "frr4", "frr5", "frr6", "frr7"}
+	allowableZebraSoftwareName := []string{"", "quagga", "frr3", "frr4", "frr5", "frr6", "frr7", "frr7.1"}
 	isAllowable := false
 	for _, allowable := range allowableZebraSoftwareName {
 		if b.Zebra.Config.SoftwareName == allowable {