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fix(wireguard): delete existing Wireguard link before adding it

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This commit is contained in:
Quentin McGaw
2023-06-10 20:23:21 +00:00
parent 4a0f9c36ba
commit 4292a500ae
1 changed files with 17 additions and 0 deletions
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17
internal/wireguard/run.go
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@@ -168,6 +168,23 @@ func setupKernelSpace(ctx context.Context,
Name: interfaceName, Name: interfaceName,
MTU: mtu, MTU: mtu,
} }
links, err := netLinker.LinkList()
if err != nil {
return link, nil, fmt.Errorf("listing links: %w", err)
}
// Cleanup any previous Wireguard interface with the same name
// See https://github.com/qdm12/gluetun/issues/1669
for _, link := range links {
if link.Type == "wireguard" && link.Name == interfaceName {
err = netLinker.LinkDel(link)
if err != nil {
return link, nil, fmt.Errorf("deleting previous Wireguard link %s: %w",
interfaceName, err)
}
}
}
linkIndex, err := netLinker.LinkAdd(link) linkIndex, err := netLinker.LinkAdd(link)
if err != nil { if err != nil {
return link, nil, fmt.Errorf("%w: %s", ErrAddLink, err) return link, nil, fmt.Errorf("%w: %s", ErrAddLink, err)