feat(network): add support for static IPv6 assignment #4598
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This commit introduces end-to-end support for assigning static IPv6 addresses to containers, both via the command line and through nerdctl compose. Key changes: - A new `--ip6` flag is added to `nerdctl run` to allow direct assignment of a static IPv6 address. - The CNI bridge configuration for IPv6 networks is now updated to declare the `"ips"` capability. This is required by libcni to process static IP capability arguments. - To prevent regressions in downstream CNI plugins (like dnsname and firewall), the `"dns"` and `"portMappings"` capabilities are also explicitly declared for IPv6 networks. This avoids issues where implicit capabilities were being dropped. - The compose parser now recognizes the `ipv6_address` field within a service's network configuration and translates it to the `--ip6` flag during container creation. - Adds comprehensive integration tests for static IPv4, IPv6, and dual-stack IP assignment, as well as unit tests for compose file parsing, to validate the new functionality and prevent regressions. Fixes containerd#4597 Signed-off-by: Frits <[email protected]>
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This PR introduces end-to-end support for assigning static IPv6 addresses to containers, both via the command line and through
nerdctl compose.Key changes:
A new
--ip6flag is added tonerdctl runto allow direct assignment of a static IPv6 address.The CNI bridge configuration for IPv6 networks is now updated to declare the
"ips"capability. This is required by libcni to process static IP capability arguments.To prevent regressions in downstream CNI plugins (like dnsname and firewall), the
"dns"and"portMappings"capabilities are also explicitly declared for IPv6 networks. This avoids issues where implicit capabilities were being dropped.The compose parser now recognizes the
ipv6_addressfield within a service's network configuration and translates it to the--ip6flag during container creation.Adds comprehensive integration tests for static IPv4, IPv6, and dual-stack IP assignment, as well as unit tests for compose file parsing, to validate the new functionality and prevent regressions.
fixes #4597