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nixos/virtualisation: provide actionable advice on VLAN TAP failure

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Kierán Meinhardt 2026-03-04 08:39:53 +01:00
commit d1386a426b
1 changed files with 4 additions and 0 deletions
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4
nixos/modules/virtualisation/nspawn-container/run-nspawn/src/run_nspawn/__init__.py
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@ -90,6 +90,10 @@ def ensure_vlan_bridge(vlan: int) -> typing.Generator[str, None, None]:
logger.warning(
f"TAP {tap_name} not found; container will be isolated from VDE"
)
if not Path("/dev/net").exists():
logger.warning(
"A common reason for this is that /dev/net is not available in the Nix sandbox. Try adding /dev/net to extra-sandbox-paths."
)
yield bridge_name
finally: