35 lines
817 B
Go
35 lines
817 B
Go
package netlink
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import (
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"fmt"
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"github.com/vishvananda/netlink"
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)
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func (n *NetLink) IsIPv6Supported() (supported bool, err error) {
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links, err := n.LinkList()
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if err != nil {
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return false, fmt.Errorf("listing links: %w", err)
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}
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for _, link := range links {
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routes, err := n.RouteList(link, netlink.FAMILY_V6)
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if err != nil {
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return false, fmt.Errorf("listing IPv6 routes for link %s: %w",
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link.Attrs().Name, err)
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}
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// Check each route for IPv6 due to Podman bug listing IPv4 routes
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// as IPv6 routes at container start, see:
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// https://github.com/qdm12/gluetun/issues/1241#issuecomment-1333405949
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for _, route := range routes {
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if route.Dst.IP.To4() == nil ||
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route.Src.To4() == nil { // Destination or source IP is IPv6
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return true, nil
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}
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}
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}
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return false, nil
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}
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