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Diffstat (limited to 'python/vyos/template.py')
| -rw-r--r-- | python/vyos/template.py | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/python/vyos/template.py b/python/vyos/template.py index 85e4d12b3..7810f5edd 100644 --- a/python/vyos/template.py +++ b/python/vyos/template.py @@ -207,6 +207,11 @@ def network_from_ipv4(address): cidr_prefix = ip_interface(f'{address}/{netmask}').network return address_from_cidr(cidr_prefix) +@register_filter('is_interface') +def is_interface(interface): + """ Check if parameter is a valid local interface name """ + return os.path.exists(f'/sys/class/net/{interface}') + @register_filter('is_ip') def is_ip(addr): """ Check addr if it is an IPv4 or IPv6 address """ |