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| author | Brett Holman <brett.holman@canonical.com> | 2023-04-21 08:11:35 -0600 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-04-21 09:11:35 -0500 |
| commit | 34637a49df13a054c4355de675b7cf286450b2f5 (patch) | |
| tree | a87eeac4709473c836cd5a2c5dca14a9a62ccc48 | |
| parent | 0a534a6d449c014469a8b5fd331c8fbde29627dc (diff) | |
| download | cloud-init-git-34637a49df13a054c4355de675b7cf286450b2f5.tar.gz | |
net: Document use of `ip route append` to add routes (#2130)
| -rw-r--r-- | cloudinit/net/ephemeral.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/cloudinit/net/ephemeral.py b/cloudinit/net/ephemeral.py index 130afa17..8339f169 100644 --- a/cloudinit/net/ephemeral.py +++ b/cloudinit/net/ephemeral.py @@ -197,6 +197,14 @@ class EphemeralIPv4Network: via_arg = [] if gateway != "0.0.0.0": via_arg = ["via", gateway] + + # Use "append" rather than "add" since the DHCP server may provide + # rfc3442 classless static routes with multiple routes to the same + # subnet via different routers or local interface addresses. + # + # In this scenario, `ip r add` fails. + # + # RHBZ: #2003231 subp.subp( ["ip", "-4", "route", "append", net_address] + via_arg |