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Fixed in case of empty address

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Signed-off-by: Roberto Bonafiglia <roberto.bonafiglia@suse.com>
This commit is contained in:
Roberto Bonafiglia 2022-03-07 11:05:08 +01:00
parent d7d4c891e2
commit 2c39febdd2
1 changed files with 11 additions and 5 deletions
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16
pkg/agent/flannel/flannel.go
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@ -103,11 +103,15 @@ func LookupExtInterface(iface *net.Interface, netMode int) (*backend.ExternalInt
}
logrus.Debugf("The interface %s will be used by flannel", iface.Name)
ifaceAddr, err = ip.GetInterfaceIP4Addrs(iface)
if err != nil {
return nil, fmt.Errorf("failed to find IPv4 address for interface %s", iface.Name)
if netMode == (ipv4+ipv6) || netMode == ipv4 {
ifaceAddr, err = ip.GetInterfaceIP4Addrs(iface)
if err != nil {
return nil, fmt.Errorf("failed to find IPv4 address for interface %s", iface.Name)
}
logrus.Infof("The interface %s with ipv4 address %s will be used by flannel", iface.Name, ifaceAddr[0])
} else {
ifaceAddr = append(ifaceAddr, nil)
}
logrus.Infof("The interface %s with ipv4 address %s will be used by flannel", iface.Name, ifaceAddr[0])
if netMode == (ipv4 + ipv6) {
ifacev6Addr, err = ip.GetInterfaceIP6Addrs(iface)
@ -116,9 +120,11 @@ func LookupExtInterface(iface *net.Interface, netMode int) (*backend.ExternalInt
}
logrus.Infof("Using dual-stack mode. The ipv6 address %s will be used by flannel", ifacev6Addr[0])
} else {
ifacev6Addr = append(ifacev6Addr, nil)
}
if iface.MTU == 0 {
return nil, fmt.Errorf("failed to determine MTU for %s interface", ifaceAddr)
return nil, fmt.Errorf("failed to determine MTU for %s interface", iface.Name)
}
return &backend.ExternalInterface{