From 7c1587e3401a010d1865df61dbaf117c77dd062e Mon Sep 17 00:00:00 2001 From: Ian Gudger Date: Mon, 7 Oct 2019 19:28:26 -0700 Subject: Implement IP_TTL. Also change the default TTL to 64 to match Linux. PiperOrigin-RevId: 273430341 --- runsc/boot/loader.go | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'runsc/boot') diff --git a/runsc/boot/loader.go b/runsc/boot/loader.go index 4e57155c6..c8e5e86ee 100644 --- a/runsc/boot/loader.go +++ b/runsc/boot/loader.go @@ -930,6 +930,10 @@ func newEmptyNetworkStack(conf *Config, clock tcpip.Clock) (inet.Stack, error) { return nil, fmt.Errorf("failed to enable SACK: %v", err) } + // Set default TTLs as required by socket/netstack. + s.Stack.SetNetworkProtocolOption(ipv4.ProtocolNumber, tcpip.DefaultTTLOption(netstack.DefaultTTL)) + s.Stack.SetNetworkProtocolOption(ipv6.ProtocolNumber, tcpip.DefaultTTLOption(netstack.DefaultTTL)) + // Enable Receive Buffer Auto-Tuning. if err := s.Stack.SetTransportProtocolOption(tcp.ProtocolNumber, tcpip.ModerateReceiveBufferOption(true)); err != nil { return nil, fmt.Errorf("SetTransportProtocolOption failed: %v", err) -- cgit v1.2.3