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-rw-r--r--python/vyos/template.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/python/vyos/template.py b/python/vyos/template.py
index 22883b103..85e4d12b3 100644
--- a/python/vyos/template.py
+++ b/python/vyos/template.py
@@ -131,6 +131,13 @@ def address_from_cidr(prefix):
from ipaddress import ip_network
return str(ip_network(prefix).network_address)
+@register_filter('bracketize_ipv6')
+def bracketize_ipv6(address):
+ """ Place a passed IPv6 address into [] brackets, do nothing for IPv4 """
+ if is_ipv6(address):
+ return f'[{address}]'
+ return address
+
@register_filter('netmask_from_cidr')
def netmask_from_cidr(prefix):
""" Take CIDR prefix and convert the prefix length to a "subnet mask".