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-rw-r--r--pkg/tcpip/transport/udp/endpoint.go2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkg/tcpip/transport/udp/endpoint.go b/pkg/tcpip/transport/udp/endpoint.go
index 4de2aa3e3..f2dd98f35 100644
--- a/pkg/tcpip/transport/udp/endpoint.go
+++ b/pkg/tcpip/transport/udp/endpoint.go
@@ -400,8 +400,8 @@ func (e *endpoint) SetSockOpt(opt interface{}) *tcpip.Error {
case tcpip.MulticastTTLOption:
e.mu.Lock()
- defer e.mu.Unlock()
e.multicastTTL = uint8(v)
+ e.mu.Unlock()
case tcpip.AddMembershipOption:
nicID := v.NIC