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We have had duplicated test cases in test_jinja_filters.py and test_template.py,
They have been consolidated into test_template.py.
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The subnet router anycast address is predefined. Its format is as follows:
| n bits | 128-n bits |
+------------------------------------------------+----------------+
| subnet prefix | 00000000000000 |
+------------------------------------------------+----------------+
The "subnet prefix" in an anycast address is the prefix that identifies a
specific link. This anycast address is syntactically the same as a unicast
address for an interface on the link with the interface identifier set to zero.
Packets sent to the Subnet-Router anycast address will be delivered to one
router on the subnet. All routers are required to support the Subnet-Router
anycast addresses for the subnets to which they have interfaces.
The Subnet-Router anycast address is intended to be used for applications where
a node needs to communicate with any one of the set of routers.
Our code as of now returns the subnet router anycast address as the
first_host_address().
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Support a 1:1 or 1:n prefix translation. The following configuration will NAT
source addresses from the 10.2.0.0/16 range to an address from 192.0.2.0/29.
For this feature to work a Linux Kernel 5.8 or higher is required!
vyos@vyos# show nat
source {
rule 100 {
outbound-interface eth1
source {
address 10.2.0.0/16
}
translation {
address 192.0.2.0/29
}
}
}
This results in the nftables configuration:
chain POSTROUTING {
type nat hook postrouting priority srcnat; policy accept;
oifname "eth1" counter packets 0 bytes 0 snat ip prefix to ip saddr map
{ 10.2.0.0/16 : 192.0.2.0/29 } comment "SRC-NAT-100"
}
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We had two places were the is_ip, is_ipv4 and is_ipv6 helpers had been defined.
All places now have been converged into vyos.template as they are used both
in the Jinja2 templates and also in our scripts.
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Remove workaround which split (local|remote)_address and also subnet keys into
individual keys for the assigned IP address family (4/6).
During template rendering check IP version by introducing new ipv4 and ipv6
Jinja2 filters {% if foo | ipv4 %} or {% if bar | ipv6 %} options.
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