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name : iproute2.py
 from typing import Optional

import cloudinit.net.netops as netops
from cloudinit import subp


class Iproute2(netops.NetOps):
    @staticmethod
    def link_up(interface: str, family: Optional[str] = None):
        subp.subp(
            ["ip"]
            + (["-family", family] if family else [])
            + ["link", "set", "dev", interface, "up"]
        )

    @staticmethod
    def link_down(interface: str, family: Optional[str] = None):
        subp.subp(
            ["ip"]
            + (["-family", family] if family else [])
            + ["link", "set", "dev", interface, "down"]
        )

    @staticmethod
    def add_route(
        interface: str,
        route: str,
        *,
        gateway: Optional[str] = None,
        source_address: Optional[str] = None,
    ):
        subp.subp(
            ["ip", "-4", "route", "add", route]
            + (["via", gateway] if gateway and gateway != "0.0.0.0" else [])
            + [
                "dev",
                interface,
            ]
            + (["src", source_address] if source_address else []),
        )

    @staticmethod
    def append_route(interface: str, address: str, gateway: str):
        subp.subp(
            ["ip", "-4", "route", "append", address]
            + (["via", gateway] if gateway and gateway != "0.0.0.0" else [])
            + ["dev", interface]
        )

    @staticmethod
    def del_route(
        interface: str,
        address: str,
        *,
        gateway: Optional[str] = None,
        source_address: Optional[str] = None,
    ):
        subp.subp(
            ["ip", "-4", "route", "del", address]
            + (["via", gateway] if gateway and gateway != "0.0.0.0" else [])
            + ["dev", interface]
            + (["src", source_address] if source_address else [])
        )

    @staticmethod
    def get_default_route() -> str:
        return subp.subp(
            ["ip", "route", "show", "0.0.0.0/0"],
        ).stdout

    @staticmethod
    def add_addr(interface: str, address: str, broadcast: str):
        subp.subp(
            [
                "ip",
                "-family",
                "inet",
                "addr",
                "add",
                address,
                "broadcast",
                broadcast,
                "dev",
                interface,
            ],
            update_env={"LANG": "C"},
        )

    @staticmethod
    def del_addr(interface: str, address: str):
        subp.subp(
            ["ip", "-family", "inet", "addr", "del", address, "dev", interface]
        )
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