[config/load_mgmt_config] Support load IPv6 mgmt IP (sonic-net#2206)

* [config/load_mgmt_config] Support load IPv6 mgmt IP

Signed-off-by: Jing Kan [email protected]

Author: Blueve

config/main.py

@@ -938,16 +938,25 @@ def load_mgmt_config(filename):
     config_data = parse_device_desc_xml(filename)
     hostname = config_data['DEVICE_METADATA']['localhost']['hostname']
     _change_hostname(hostname)
-    mgmt_conf = netaddr.IPNetwork(config_data['MGMT_INTERFACE'].keys()[0][1])
-    gw_addr = config_data['MGMT_INTERFACE'].values()[0]['gwaddr']
-    command = "ifconfig eth0 {} netmask {}".format(str(mgmt_conf.ip), str(mgmt_conf.netmask))
-    run_command(command, display_cmd=True)
-    command = "ip route add default via {} dev eth0 table default".format(gw_addr)
-    run_command(command, display_cmd=True, ignore_error=True)
-    command = "ip rule add from {} table default".format(str(mgmt_conf.ip))
-    run_command(command, display_cmd=True, ignore_error=True)
-    command = "[ -f /var/run/dhclient.eth0.pid ] && kill `cat /var/run/dhclient.eth0.pid` && rm -f /var/run/dhclient.eth0.pid"
-    run_command(command, display_cmd=True, ignore_error=True)
+    for key in list(config_data['MGMT_INTERFACE'].keys()):
+        # key: (eth0, ipprefix)
+        # value: { gwaddr: ip }
+        mgmt_conf = netaddr.IPNetwork(key[1])
+        gw_addr = config_data['MGMT_INTERFACE'][key]['gwaddr']
+        if mgmt_conf.version == 4:
+            command = "ifconfig eth0 {} netmask {}".format(str(mgmt_conf.ip), str(mgmt_conf.netmask))
+            run_command(command, display_cmd=True)
+        else:
+            command = "ifconfig eth0 add {}".format(str(mgmt_conf))
+            # Ignore error for IPv6 configuration command due to it not allows config the same IP twice
+            run_command(command, display_cmd=True, ignore_error=True)
+        command = "ip{} route add default via {} dev eth0 table default".format(" -6" if mgmt_conf.version == 6 else "", gw_addr)
+        run_command(command, display_cmd=True, ignore_error=True)
+        command = "ip{} rule add from {} table default".format(" -6" if mgmt_conf.version == 6 else "", str(mgmt_conf.ip))
+        run_command(command, display_cmd=True, ignore_error=True)
+    if len(config_data['MGMT_INTERFACE'].keys()) > 0:
+        command = "[ -f /var/run/dhclient.eth0.pid ] && kill `cat /var/run/dhclient.eth0.pid` && rm -f /var/run/dhclient.eth0.pid"
+        run_command(command, display_cmd=True, ignore_error=True)
     click.echo("Please note loaded setting will be lost after system reboot. To preserve setting, run `config save`.")
 
 @config.command("load_minigraph")

doc/Command-Reference.md

@@ -3377,7 +3377,7 @@ running on the device.
 
 This command is used to reconfigure hostname and mgmt interface based on device description file.
 This command either uses the optional file specified as arguement or looks for the file "/etc/sonic/device_desc.xml".
-If the file does not exist or if the file does not have valid fields for "hostname" and "ManagementAddress", it fails.
+If the file does not exist or if the file does not have valid fields for "hostname" and "ManagementAddress" (or "ManagementAddressV6"), it fails.
 
 When user specifies the optional argument "-y" or "--yes", this command forces the loading without prompting the user for confirmation.
 If the argument is not specified, it prompts the user to confirm whether user really wants to load this configuration file.