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-rw-r--r--pkg/tcpip/transport/tcp/endpoint.go23
1 files changed, 4 insertions, 19 deletions
diff --git a/pkg/tcpip/transport/tcp/endpoint.go b/pkg/tcpip/transport/tcp/endpoint.go
index cca511fb9..cc8b533c8 100644
--- a/pkg/tcpip/transport/tcp/endpoint.go
+++ b/pkg/tcpip/transport/tcp/endpoint.go
@@ -1691,26 +1691,11 @@ func (e *endpoint) GetSockOpt(opt interface{}) *tcpip.Error {
}
func (e *endpoint) checkV4Mapped(addr *tcpip.FullAddress) (tcpip.NetworkProtocolNumber, *tcpip.Error) {
- netProto := e.NetProto
- if header.IsV4MappedAddress(addr.Addr) {
- // Fail if using a v4 mapped address on a v6only endpoint.
- if e.v6only {
- return 0, tcpip.ErrNoRoute
- }
-
- netProto = header.IPv4ProtocolNumber
- addr.Addr = addr.Addr[header.IPv6AddressSize-header.IPv4AddressSize:]
- if addr.Addr == header.IPv4Any {
- addr.Addr = ""
- }
- }
-
- // Fail if we're bound to an address length different from the one we're
- // checking.
- if l := len(e.ID.LocalAddress); l != 0 && len(addr.Addr) != 0 && l != len(addr.Addr) {
- return 0, tcpip.ErrInvalidEndpointState
+ unwrapped, netProto, err := e.TransportEndpointInfo.AddrNetProto(*addr, e.v6only)
+ if err != nil {
+ return 0, err
}
-
+ *addr = unwrapped
return netProto, nil
}