[client] Allow routing to fallback to exclusion routes if rules are not supported

[lixmal]

Describe your changes

We allow this condition to match:

    rules := getSetupRules()
    for _, rule := range rules {
        if err := addRule(rule); err != nil {
            if errors.Is(err, syscall.EOPNOTSUPP) {
                log.Warnf("Rule operations are not supported, falling back to the legacy routing setup")
                setIsLegacy(true)
                return r.setupRefCounter(initAddresses, stateManager)
            }
            return nil, nil, fmt.Errorf("%s: %w", rule.description, err)
        }
    }

Issue ticket number and link

Checklist

• [x] Is it a bug fix
• [ ] Is a typo/documentation fix
• [ ] Is a feature enhancement
• [ ] It is a refactor
• [ ] Created tests that fail without the change (if possible)
• [ ] Extended the README / documentation, if necessary

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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